Science is a body of empirical, theoretical, and practical knowledge about the natural world, produced by a global community of researchers making use of scientific methods, which emphasize the observation, explanation, and prediction of real world phenomena by experiment. Given the dual status of science as objective knowledge and as a human construct, good historiography of science draws on the historical methods of both intellectual history and social history.

Tracing the origins of science is possible through the many important texts which have survived from history. However, the word scientist is relatively recent—first coined by William Whewell in the 19th century. Previously, people investigating nature called themselves natural philosophers.

While empirical investigations of the natural world have been described since classical antiquity (for example, by Babylonian astronomers, Indian philosophers, Thales, Aristotle, and others), the dawn of modern science is generally traced back to the development of scientific methodology, which had been employed since the Middle Ages (for example, by Ibn al-Haytham, Abū Rayhān al-Bīrūnī, and Roger Bacon) and gained more prominence in the early modern period, during what is known as the scientific revolution.

Scientific methodology is considered to be so fundamental to modern science that some — especially philosophers of science and practicing scientists — consider earlier inquiries into nature to be pre-scientific. Traditionally, historians of science have defined science sufficiently broadly to include those inquiries.[1]

Early culturesEdit

See also: Protoscience and Alchemy

In prehistoric times, advice and knowledge was passed from generation to generation in an oral tradition. The development of writing enabled knowledge to be stored and communicated across generations with much greater fidelity. Combined with the development of agriculture, which allowed for a surplus of food, it became possible for early civilizations to develop, because more time could be devoted to tasks other than survival.

Many ancient civilizations collected astronomical information in a systematic manner through simple observation. Though they had no knowledge of the real physical structure of the planets and stars, many theoretical explanations were proposed. Basic facts about human physiology were known in some places, and alchemy was practiced in several civilizations. Considerable observation of macrobiotic flora and fauna was also performed.



From their beginnings in Sumer (now Iraq) around 3500 BC, the Mesopotamian peoples began to attempt to record some observations of the world with extremely thorough numerical data. But their observations and measurements were seemingly taken for purposes other than for scientific laws. A concrete instance of Pythagoras' law was recorded, as early as the 18th century BC: the Mesopotamian cuneiform tablet Plimpton 322 records a number of Pythagorean triplets (3,4,5) (5,12,13). ..., dated 1900 BC, possibly millennia before Pythagoras, [2] but an abstract formulation of the Pythagorean theorem was not.[2]

In Babylonian astronomy, the vigorous notings of the motions of the stars, planets, and the moon are left on thousands of clay tablets created by scribes. Even today, astronomical periods identified by Mesopotamian scientists are still widely used in Western calendars: the solar year, the lunar month, the seven-day week. Using these data they developed arithmetical methods to compute the changing length of daylight in the course of the year and to predict the appearances and disappearances of the Moon and planets and eclipses of the Sun and Moon. Only a few astronomers' names are known, such as that of Kidinnu, a Chaldean astronomer and mathematician. Kiddinu's value for the solar year is in use for today's calendars. Babylonian astronomy was "the first and highly successful attempt at giving a refined mathematical description of astronomical phenomena." According to the historian A. Aaboe, "all subsequent varieties of scientific astronomy, in the Hellenistic world, in India, in Islam, and in the West - if not indeed all subsequent endeavour in the exact sciences - depend upon Babylonian astronomy in decisive and fundamental ways."[3]

In the third century BC, astronomers began to use "goal-year texts" to predict the motions of the planets. These texts compiled records of past observations to find repeating occurrences of ominous phenomena for each planet. About the same time, or shortly afterwards, astronomers created mathematical models that allowed them to predict these phenomena directly, without consulting past records. A notable Babylonian astronomer from this time was Seleucus of Seleucia, who proposed a heliocentric model.


Significant advances in Ancient Egypt include astronomy, mathematics and medicine.[4] Their geometry was a necessary outgrowth of surveying to preserve the layout and ownership of farmland, which was flooded annually by the Nile river. The 3,4,5 right triangle and other rules of thumb served to represent rectilinear structures, and the post and lintel architecture of Egypt. Egypt was also a center of alchemy research for much of the Mediterranean.

The Edwin Smith papyrus is one of the first medical documents still extant, and perhaps the earliest document that attempts to describe and analyse the brain: it might be seen as the very beginnings of modern neuroscience. However, while Egyptian medicine had some effective practices, it was not without its ineffective and sometimes harmful practices. Medical historians believe that ancient Egyptian pharmacology, for example, was largely ineffective. [5] Nevertheless, it applies the following components: examination, diagnosis, treatment and prognosis, to the treatment of disease,[3] which display strong parallels to the basic empirical method of science and according to G. E. R. Lloyd[6] played a significant role in the development of this methodology. The Ebers papyrus (circa 1550 BC) also contains evidence of traditional empiricism.

In Ptolemaic Egypt, Alexandria became the center of scholarship across the Hellenistic world. The Egyptian mathematicianEuclid, laid down the foundations of mathematical rigor and developed/refined the concepts of definition, axiom, theorem, and geometric proof, in his Elements, considered the most influential textbook in geometry.[7] In Roman Egypt, the Egyptian astronomerPtolemy, developed the geocentric Ptolemaic model which dominated Western astronomy for millennia; Ptolemy is often considered the greatest astronomer of the Hellenistic world. The Egyptian alchemist Zosimos of Panopolis laid the foundations for the alchemical traditions that later arose in the Islamic world and then medieval Europe.


See also: Indian mathematics, Indian astronomy, Ayurveda, and History of metallurgy in the Indian subcontinent

Excavations at Harappa, Mohenjo-daro and other sites of the Indus Valley Civilization have uncovered evidence of the use of "practical mathematics". The people of the IVC manufactured bricks whose dimensions were in the proportion 4:2:1, considered favorable for the stability of a brick structure. They used a standardized system of weights based on the ratios: 1/20, 1/10, 1/5, 1/2, 1, 2, 5, 10, 20, 50, 100, 200, and 500, with the unit weight equaling approximately 28 grams (and approximately equal to the English ounce or Greek uncia). They mass-produced weights in regular geometrical shapes, which included hexahedra, barrels, cones, and cylinders, thereby demonstrating knowledge of basic geometry.[8]

The inhabitants of Indus civilization also tried to standardize measurement of length to a high degree of accuracy. They designed a ruler—the Mohenjo-daro ruler—whose unit of length (approximately 1.32 inches or 3.4 centimetres) was divided into ten equal parts. Bricks manufactured in ancient Mohenjo-daro often had dimensions that were integral multiples of this unit of length.[9][10]

Early astronomy in India—like in other cultures— was intertwined with religion.[11] The first textual mention of astronomical concepts comes from the Vedas—religious literature of India.[11] According to Sarma (2008): "One finds in the Rigveda intelligent speculations about the genesis of the universe from nonexistence, the configuration of the universe, the spherical self-supporting earth, and the year of 360 days divided into 12 equal parts of 30 days each with a periodical intercalary month."[11]

Ayurveda medicine traces its origins to the Vedas, Atharvaveda in particular, and is connected to Hindu religion.[12] The Sushruta Samhita of Sushruta appeared during the 1st millennium BC.[13]

The wootz, crucible and stainless steels were invented in India, and were widely exported, resulting in "Damascus steel" by the year 1000.[14]


"The Hindus excel in the manufacture of iron, and in the preparations of those ingredients along with which it is fused to obtain that kind of soft iron which is usually styled Indian steel (Hindiah). They also have workshops wherein are forged the most famous sabres in the world."[15]

Indian astronomer and mathematician Aryabhata (476-550), in his Aryabhatiya (499) and Aryabhata Siddhanta, worked out an accurate heliocentric model of gravitation, including elliptical orbits, the circumference of the earth, and the longitudes of planets around the Sun. He also introduced a number of trigonometric functions (including sine, versine, cosine and inverse sine), trigonometric tables, and techniques and algorithms of algebra. In the 7th century, Brahmagupta recognized gravity as a force of attraction.[16] He also lucidly explained the use of zero as both a placeholder and a decimal digit, along with the Hindu-Arabic numeral system now used universally throughout the world. Arabic translations of the two astronomers' texts were soon available in the Islamic world, introducing what would become Arabic numerals to the Islamic World by the 9th century.[17][18]

The first 12 chapters of the Siddhanta Shiromani, written by Bhāskara in the 12th century, cover topics such as: mean longitudes of the planets; true longitudes of the planets; the three problems of diurnal rotation; syzygies; lunar eclipses; solar eclipses; latitudes of the planets; risings and settings; the moon's crescent; conjunctions of the planets with each other; conjunctions of the planets with the fixed stars; and the patas of the sun and moon. The 13 chapters of the second part cover the nature of the sphere, as well as significant astronomical and trigometric calculations based on it.

During the 14th-16th centuries, the Kerala school of astronomy and mathematics made significant advances in astronomy and especially mathematics, including fields such as trigonometry and calculus. In particular, Madhava of Sangamagrama is considered the "founder of mathematical analysis".[19]


File:Su Song Star Map 1.JPG

China has a long and rich history of technological contribution. The Four Great Inventions of ancient China' (Chinese: 四大發明; Pinyin: Sì dà fā míng) are the compass, gunpowder, papermaking, and printing. These four discoveries had an enormous impact on the development of Chinese civilization and a far-ranging global impact. According to English philosopher Francis Bacon, writing in Novum Organum,

Printing, gunpowder and the compass: These three have changed the whole face and state of things throughout the world; the first in literature, the second in warfare, the third in navigation; whence have followed innumerable changes, in so much that no empire, no sect, no star seems to have exerted greater power and influence in human affairs than these mechanical discoveries."[22]

There are many notable contributors to the field of Chinese science throughout the ages. One of the best examples would be Shen Kuo (1031–1095), a polymath scientist and statesman who was the first to describe the magnetic-needle compass used for navigation, discovered the concept of true north, improved the design of the astronomical gnomon, armillary sphere, sight tube, and clepsydra, and described the use of drydocks to repair boats. After observing the natural process of the inundation of silt and the find of marine fossils in the Taihang Mountains (hundreds of miles from the Pacific Ocean), Shen Kuo devised a theory of land formation, or geomorphology. He also adopted a theory of gradual climate change in regions over time, after observing petrified bamboo found underground at Yan'an, Shaanxi province. If not for Shen Kuo's writing, the architectural works of Yu Hao would be little known, along with the inventor of movable type printing, Bi Sheng (990-1051). Shen's contemporary Su Song (1020–1101) was also a brilliant polymath, an astronomer who created a celestial atlas of star maps, wrote a pharmaceutical treatise with related subjects of botany, zoology, mineralogy, and metallurgy, and had erected a large astronomical clocktower in Kaifeng city in 1088. To operate the crowning armillary sphere, his clocktower featured an escapement mechanism and the world's oldest known use of an endless power-transmitting chain drive.

The Jesuit China missions of the 16th and 17th centuries "learned to appreciate the scientific achievements of this ancient culture and made them known in Europe. Through their correspondence European scientists first learned about the Chinese science and culture."[23] Western academic thought on the history of Chinese technology and science was galvanized by the work of Joseph Needham and the Needham Research Institute. Among the technological accomplishments of China were, according to the British scholar Needham, early seismological detectors (Zhang Heng in the 2nd century), the water-powered celestial globe (Zhang Heng), matches, the independent invention of the decimal system, dry docks, sliding calipers, the double-action piston pump, cast iron, the blast furnace, the iron plough, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the winnowing machine, the rotary fan, the parachute, natural gas as fuel, the raised-relief map, the propeller, the crossbow, and a solid fuel rocket, the multistage rocket, the horse collar, along with contributions in logic, astronomy, medicine, and other fields.

However, cultural factors prevented these Chinese achievements from developing into what we might call "modern science". According to Needham, it may have been the religious and philosophical framework of Chinese intellectuals which made them unable to accept the ideas of laws of nature:

It was not that there was no order in nature for the Chinese, but rather that it was not an order ordained by a rational personal being, and hence there was no conviction that rational personal beings would be able to spell out in their lesser earthly languages the divine code of laws which he had decreed aforetime. The Taoists, indeed, would have scorned such an idea as being too naïve for the subtlety and complexity of the universe as they intuited it.[24]

Hellenistic MediterraneanEdit

In Classical Antiquity, the inquiry into the workings of the universe took place both in investigations aimed at such practical goals as establishing a reliable calendar or determining how to cure a variety of illnesses and in those abstract investigations known as natural philosophy. The ancient people who are considered scientists may have thought of themselves as natural philosophers, as practitioners of a skilled profession (for example, physicians), or as followers of a religious tradition (for example, temple healers).

The earliest Greek and Phoenician philosophers, known as the pre-Socratics, provided competing answers to the question found in the myths of their neighbors: "How did the ordered cosmos in which we live come to be?"[25] The Phoenician pre-Socratic philosopher Thales (7th and 6th centuries BC), sometimes dubbed a "father of science" (in the sense of natural philosophy), postulated non-supernatural explanations for natural phenomena such as lightning and earthquakes. His student Pythagoras founded the Pythagorean school, which investigated mathematics for its own sake, and postulated that the Earth is spherical in shape,[26] a concept most likely inspired by Phoenician sailors. Leucippus (5th century BC) developed atomism, the theory that all matter is made of indivisible, imperishable units called atoms. This was expanded by his pupil Democritus.

Subsequently, Plato and Aristotle produced the first systematic discussions of natural philosophy, which did much to shape later investigations of nature. Their development of deductive reasoning was of particular importance and usefulness to later scientific inquiry. Plato founded the Platonic Academy in 387 BC, whose motto was "Let none unversed in geometry enter here", and turned out many notable philosophers. Plato's student Aristotle introduced empiricism and the notion that universal truths can be arrived at via observation and induction, thereby laying the foundations of the scientific method.[27] Aristotle also produced many biological writings that were empirical in nature, focusing on biological causation and the diversity of life. He made countless observations of nature, especially the habits and attributes of plants and animals in the world around him, classified more than 540 animal species, and dissected at least 50. Aristotle's writings profoundly influenced subsequent Islamic and European scholarship, though they were eventually superseded in the Scientific Revolution.

This period included advances in factual knowledge, including anatomy, zoology, botany, mineralogy, geography, mathematics and astronomy; an awareness of the importance of certain scientific problems, especially those related to the problem of change and its causes; and a recognition of applying mathematics to natural phenomena and undertaking empirical research.[28] In the Hellenistic age, scholars frequently employed the principles developed in earlier thought: the application of mathematics and deliberate empirical research, in their scientific investigations.[29] Thus, clear unbroken lines of influence lead from ancient Hellenistic philosophers, to medieval Muslim philosophers and scientists, to the European Renaissance and Enlightenment, to the secular sciences of the modern day. Neither reason nor inquiry began with the ancient Greeks, but they did develop the Socratic method, the idea of Forms, and advances in geometry, logic, and the natural sciences. Benjamin Farrington, former Professor of Classics at Swansea University wrote in 1944:

"Men were weighing for thousands of years before Archimedes worked out the laws of equilibrium; they must have had practical and intuitional knowledge of the principles involved. What Archimedes did was to sort out the theoretical implications of this practical knowledge and present the resulting body of knowledge as a logically coherent system."

The astronomer Aristarchus of Samos proposed a heliocentric model of the solar system. The Libyan geographer Eratosthenes fairly accurately calculated the circumference of the Earth. Hipparchus (ca. 190 – ca. 120 BC) produced a systematic star catalog. In medicine, Herophilos (335 - 280 BC) based his conclusions on dissection of the human body and described the nervous system. Hippocrates (ca. 460 BC – ca. 370 BC) and his followers described diseases and medical conditions. Archimedes, considered one of the greatest mathematicians of his time,[30] used the method of exhaustion to calculate the area under the arc of a parabola with the summation of a series, and gave a fairly accurate approximation of Pi.[31] He is also known in physics for laying the foundations of hydrostatics and the explanation of the principle of the lever. Theophrastus wrote some early descriptions of plants and animals, establishing a taxonomy and looking at minerals in terms of their properties such as hardness.

Roman EmpireEdit

Galen (129 – ca. 200 AD) performed audacious operations—including brain and eye surgeries— that were not attempted again in the Mediterranean region for centuries. Pliny the Elder produced what was one of the largest encyclopedias of the natural world in 77 AD, and is regarded as the successor to Theophrastus.
File:Rough diamond.jpg
He accurately describes the octahedral shape of the diamond, and proceeds to mention that diamond dust is used by engravers to cut and polish other gems owing to its great hardness. His recognition of the importance of crystal shape is a precursor to crystallography, while mention of numerous other minerals presages mineralogy. He also recognises that other minerals have characteristic crystal shapes, but in one example, confuses the crystal habit with the work of lapidaries. He also recognised that amber was a fossilized resin from pine trees because he had seen samples with trapped insects within them.

Science in the Middle AgesEdit

With the division of the Empire, the Western Roman Empire lost contact with much of the East. The Library of Alexandria had suffered since it fell under Roman rule.[32] While the Byzantine Empire still held learning centers such as Constantinople, Western Europe's knowledge was concentrated in monasteries until the rose of medieval universities in the 12th and 13th centuries. The curriculum of monastic schools included the study of the few available ancient texts and of new works on practical subjects like medicine[33] and timekeeping.[34]

Meanwhile, in the Middle East, the Indian and Hellenistic philosophical traditions found support under the newly created Arab Empire. With the spread of Islam in the 7th and 8th centuries, a period of Muslim scholarship, known as the Islamic Golden Age, lasted until the 16th century. This scholarship was aided by several factors. The use of a single language, Arabic, allowed communication without need of a translator. Access to Greek and Latin texts from the Byzantine Empire, along with Sanskrit sources of learning from India as well as Persian texts from the Sassanid Empire, provided Muslim scholars a knowledge base to build upon. In addition, there was the Hajj, which facilitated scholarly collaboration by bringing together people and new ideas from all over the Muslim world. An important contribution of the classical Islamic world was the development of a scientific methodology, the foundation of modern science.

Islamic scientific revolutionEdit

See also: Alchemy and chemistry in Islam, Early Islamic philosophy, Early Islamic sociology, Islamic astronomy, Islamic cosmology, Islamic mathematics, Islamic medicine, Islamic physics, and Islamic psychology
File:Islamic MedText c1500.jpg

Muslim scientists placed far greater emphasis on experiment than had the Greeks.[35] This led to an early scientific method being developed in the Muslim world, where significant progress in methodology was made, beginning with the experiments of Ibn al-Haytham (Alhazen) on optics from circa 1000, in his Book of Optics.[36] The most important development of the scientific method was the use of experiments to distinguish between competing scientific theories set within a generally empirical orientation, which began among Muslim scientists. Ibn al-Haytham is also regarded as the father of optics, especially for his empirical proof of the intromission theory of light. Some have also described Ibn al-Haytham as the "first scientist" for his development of the modern scientific method.[37]

Scholars such as Abdus Salam,[38] George Saliba[39] and John M. Hobson[40] hold that a Muslim Scientific Revolution (or Islamic Scientific Revolution) occurred during the Middle Ages,[41][42] an expression with which scholars such as Donald Routledge Hill and Ahmad Y Hassan express the view that Islam was the driving force behind the Muslim achievements,[43] while Robert Briffault even sees Islamic science as the foundation of modern science.[35] The most prominent view in recent scholarship, however, as examplified by Toby E. Huff,[44][45] Will Durant,[46] Fielding H. Garrison,[47] Muhammad Iqbal,[48] Hossein Nasr and Bernard Lewis,[49] holds that Muslim scientists did help in laying the foundations for an experimental science with their contributions to the scientific method and their empirical, experimental and quantitative approach to scientific inquiry.[44] Ibn al-Haytham's Book of Optics in particular is widely considered a revolution in the fields of optics and visual perception.[50][51][52][53][54][55]

Rosanna Gorini writes:

"According to the majority of the historians al-Haytham was the pioneer of the modern scientific method. With his book he changed the meaning of the term optics and established experiments as the norm of proof in the field. His investigations are based not on abstract theories, but on experimental evidences and his experiments were systematic and repeatable."[56]

Due to the development of the modern scientific method, Robert Briffault wrote in The Making of Humanity:

"What we call science arose as a result of new methods of experiment, observation, and measurement, which were introduced into Europe by the Arabs. [...] Science is the most momentous contribution of Arab civilization to the modern world, but its fruits were slow in ripening. [...] The debt of our science to that of the Arabs does not consist in startling discoveries or revolutionary theories; science owes a great deal more to Arab culture, it owes its existence....The ancient world was, as we saw, pre-scientific. [...] The Greeks systematized, generalized and theorized, but the patient ways of investigations, the accumulation of positive knowledge, the minute methods of science, detailed and prolonged observation and experimental inquiry were altogether alien to the Greek temperament."[35]

In mathematics, the Persian mathematician Muhammad ibn Musa al-Khwarizmi gave his name to the concept of the algorithm, while the term algebra is derived from al-jabr, the beginning of the title of one of his publications. What is now known as Arabic numerals originally came from India, but Muslim mathematicians did make several refinements to the number system, such as the introduction of decimal point notation. Arab mathematician Al-Battani (850-929) contributed to astronomy and mathematics, while Persian scholar Al-Razi contributed to chemistry and medicine. Abbas Ibn Firnas attempted the earliest controlled glider flight in the 9th century.

In astronomy, Al-Battani improved the measurements of Ptolemy's Hè Megalè Syntaxis (The great treatise), translated as Almagest. Al-Battani also improved the precision of the measurement of the precession of the Earth's axis. The corrections made to the geocentric model by Al-Battani, Ibn al-Haytham,[57] Averroes and the Maragha astronomers such as Nasir al-Din al-Tusi, Mo'ayyeduddin Urdi and Ibn al-Shatir were later incorporated into the Copernican heliocentric model.[58][59] Heliocentric theories were also discussed by several other Muslim astronomers such as Ja'far ibn Muhammad Abu Ma'shar al-Balkhi,[60] Abu-Rayhan Biruni, Abu Said al-Sijzi,[61] Qutb al-Din al-Shirazi, and 'Umar al-Katibi al-Qazwini.[62]

Muslim chemists and alchemists played an important role in the foundation of modern chemistry. Scholars such as Will Durant[46] and Fielding H. Garrison[63] considered Muslim chemists to be the founders of chemistry. In particular, Geber is "considered by many to be the father of chemistry".[64][65] The works of Arabic scientists influenced Roger Bacon (who introduced the empirical method to Europe, strongly influenced by his reading of Arabic writers),[66] and later Isaac Newton.[67]

Ibn Sina (Avicenna) is regarded as one of the most influential scientists and philosophers.[68] He pioneered the science of experimental medicine[69] and was the first physician to conduct clinical trials.[70] His two most notable works in medicine are the Kitāb al-shifāʾ (“Book of Healing”) and The Canon of Medicine, both of which were used as standard medicinal texts in both the Muslim world and in Europe well into the 17th century. Amongst his many contributions are the discovery of the contagious nature of infectious diseases,[69] and the introduction of clinical pharmacology.[71]

Some of the other famous scientists from the Islamic world include Al-Farabi (polymath), Abu al-Qasim (pioneer of surgery),[72] Abū Rayhān al-Bīrūnī (pioneer of Indology,[73] geodesy and anthropology),[74] Nasīr al-Dīn al-Tūsī (polymath), and Ibn Khaldun (forerunner of social sciences[75] such as demography,[76] cultural history,[77] historiography,[78] philosophy of history and sociology),[79] among many others.

The traditional historical viewpoint was that Islamic science began its decline in the 12th or 13th century, in conjunction with the Renaissance in Europe, and due in part to the 11th-13th century Mongol Conquests, during which libraries, observatories, hospitals and universities were destroyed.[80] Traditionally, the end of the Islamic Golden Age was marked by the destruction of the intellectual center of Bagdad, the capital of the Abbasid Caliphate, in 1258.[80] However, more recent studies in this area have exposed that although Islamic scientific activity was declining in some parts of the Islamic world, such as Iraq and Spain, it continued to prosper in places like PersiaIndiaSyria, and Egypt, especially in the fields of astronomy, medicine, and the social sciences.[81]

Science in Medieval EuropeEdit

File:Map of Medieval Universities.jpg

An intellectual revitalization of Europe started with the birth of medieval universities in the 12th century. The contact with the Islamic world in Spain and Sicily, and during the Reconquista and the Crusades, allowed Europeans access to scientific Arabic and Greek texts, including the works of Aristotle, Ptolemy, Geber, Al-Khwarizmi, Alhazen, Avicenna, and Averroes. European scholars had access to the translation programs of Raymond of Toledo, who sponsored the 12th century Toledo School of Translators from Arabic to Latin. Later translators like Michael Scotus would learn Arabic in order to study these texts directly. The European universities aided materially in the translation and propagation of these texts and started a new infrastructure which was needed for scientific communities. As well as this, Europeans began to venture further and further east (most notably, perhaps, Marco Polo) as a result of the Pax Mongolica. This led to the increased influence of Indian and even Chinese science on the European tradition. Technological advances were also made, such as the early flight of Eilmer of Malmesbury (who had studied Mathematics in 11th century England),[82] influenced by Abbas Ibn Firnas, and the metallurgical achievements of the Cistercian blast furnace at Laskill.[83][84]


At the beginning of the 13th century, there were reasonably accurate Latin translations of the main works of almost all the intellectually crucial ancient authors as well as many of the Islamic authors, allowing a sound transfer of scientific ideas via both the universities and the monasteries. By then, the natural philosophy contained in these texts began to be extended by notable scholastics such as Robert Grosseteste, Roger Bacon, Albertus Magnus, and Duns Scotus. Scientific methodology, influenced by the earlier scientific methodology of Islamic science, can be seen already in Grosseteste's emphasis on mathematics as a way to understand nature, and in the empirical approach admired by Bacon, particularly in his Opus Majus. Pierre Duhem's provocative thesis of the Catholic Church's Condemnation of 1277 led to the study of medieval science as a serious discipline, "but no one in the field any longer endorses his view that modern science started in 1277",[85] since it is now known that scientific methodology was practiced earlier on in the Islamic world.

The first half of the 14th century saw much important scientific work being done, largely within the framework of scholastic commentaries on Aristotlelian scientific writings.[86] William of Ockham described the principle of parsimony: natural philosophers should not postulate unnecessary entities, so that motion is not a distinct thing but is only the moving object[87] and an intermediary "sensible species" is not needed to transmit an image of an object to the eye.[88] Scholars such as Jean Buridan and Nicole Oresme re-interpreted elements of Aristotelian mechanics in light of the theory of impetus developed in Islamic physics (by early Islamic philosophers such as Avicenna and Al-Baghdadi). In particular, Buridan described the theory that impetus was the cause of the motion of projectiles, which was an important step towards the modern concept of inertia.[89] The Oxford Calculators began to mathematically analyze the kinematics of motion, making this analysis without considering the causes of motion.[90]

In 1348, the Black Death and other disasters sealed a sudden end to the previous period of massive philosophic and scientific development. Yet, the discovery of ancient texts was improved after the Fall of Constantinople in 1453, when many Byzantine scholars sought refuge in the West, bringing with them more works of Hellenistic and Islamic scholars. Meanwhile, the introduction of printing was to have great effect on European society. The facilitated dissemination of the printed word democratized learning and allowed a faster propagation of new ideas. New ideas also helped to influence the development of European science at this point: not least the introduction of Algebra from the Islamic world. These developments paved the way for the Scientific Revolution, which may also be understood as a resumption of the process of scientific change, halted at the start of the Black Death.

Science in early modern EuropeEdit

See also: Continuity thesis, Decline of Western alchemy, and Natural magic

The Renaissance of learning in Europe, that began with 12th century Scholasticism, came to an end about the time of the Black Death, and the initial period of the subsequent Italian Renaissance is sometimes seen as a lull in scientific activity. The Northern Renaissance, on the other hand, showed a decisive shift in focus from Aristoteleian natural philosophy to chemistry and the biological sciences (botany, anatomy, and medicine).[91] Thus modern science in Europe was resumed in a period of great upheaval: the Protestant Reformation and Catholic Counter-Reformation; the discovery of the Americas by Christopher Columbus; the Fall of Constantinople; but also the discovery of the Hellenistic and Islamic traditions during the Scholastic period presaged large social and political changes. Thus, a suitable environment was created in which it became possible to question scientific doctrine, in much the same way that Martin Luther and John Calvin questioned religious doctrine. The works of Ptolemy (astronomy) and Galen (medicine) were found not always to match everyday observations. Work by Vesalius on human cadavers found problems with the Galenic view of anatomy.[92]

European scientific revolutionEdit

See also: Continuity thesis

The willingness to question previously held truths and search for new answers resulted in a period of major scientific advancements, now known as the Scientific Revolution. The Scientific Revolution is traditionally held by most historians to have begun in 1543, when the books De humani corporis fabrica (On the Workings of the Human Body) by Andreas Vesalius, and De Revolutionibus by the astronomer Nicolaus Copernicus, were first printed. The thesis of Copernicus' book was that the Earth moved around the Sun. The period culminated with the publication of the Philosophiæ Naturalis Principia Mathematica in 1687 by Isaac Newton, representative of the unprecedented growth of scientific publications throughout Europe.

Other significant scientific advances were made during this time by Galileo Galilei, Edmond Halley, Robert Hooke, Christiaan Huygens, Tycho Brahe, Johannes Kepler, Gottfried Leibniz, and Blaise Pascal. In philosophy, major contributions were made by Francis Bacon, Sir Thomas Browne, René Descartes, and Thomas Hobbes. The scientific method was also better developed as the modern way of thinking emphasized experimentation and reason over traditional considerations.

Age of EnlightenmentEdit

The Age of Enlightenment was a European affair. The 17th century "Age of Reason" opened the avenues to the decisive steps towards modern science, which took place during the 18th century "Age of Enlightenment". Directly based on the works of Newton, Descartes, Pascal and Leibniz, the way was now clear to the development of modern mathematics, physics and technology by the generation of Benjamin Franklin (1706–1790), Leonhard Euler (1707–1783), Georges-Louis Leclerc (1707–1788) and Jean le Rond d'Alembert (1717–1783), epitomized in the appearance of Denis Diderot's Encyclopédie between 1751 and 1772. The impact of this process was not limited to science and technology, but affected philosophy (Immanuel Kant, David Hume), religion (notably with the appearance of positive atheism, and the increasingly significant impact of science upon religion), and society and politics in general (Adam Smith, Voltaire), the French Revolution of 1789 setting a bloody cesura indicating the beginning of political modernity[citation needed]. The early modern period is seen as a flowering of the European Renaissance, in what is often known as the Scientific Revolution, viewed as a foundation of modern science.[citation needed]

Modern scienceEdit

File:Albert Einstein Head.jpg

The Scientific Revolution established science as the preeminent source for the growth of knowledge[citation needed]. During the 19th century, the practice of science became professionalized and institutionalized in ways which continued through the 20th century. As the role of scientific knowledge grew in society, it became incorporated with many aspects of the functioning of nation-states.

The history of science is marked by a chain of advances in technology and knowledge that have always complemented each other. Technological innovations bring about new discoveries and are bred by other discoveries which inspire new possibilities and approaches to longstanding science issues.

Natural sciencesEdit


File:James clerk maxwell.jpg

The Scientific Revolution is a convenient boundary between ancient thought and classical physics. Nicolaus Copernicus revived the heliocentric model of the solar system described by Aristarchus of Samos. This was followed by the first known model of planetary motion given by Kepler in the early 17th century, which proposed that the planets follow elliptical orbits, with the Sun at one focus of the ellipse. Galileo ("Father of Modern Physics") also made use of experiments to validate physical theories, a key element of the scientific method.

In 1687, Isaac Newton published the Principia Mathematica, detailing two comprehensive and successful physical theories: Newton's laws of motion, which led to classical mechanics; and Newton's Law of Gravitation, which describes the fundamental force of gravity. The behavior of electricity and magnetism was studied by Faraday, Ohm, and others during the early 19th century. These studies led to the unification of the two phenomena into a single theory of electromagnetism, by Maxwell (known as Maxwell's equations).

File:Universe expansion2.png

The beginning of the 20th century brought the start of a revolution in physics. The long-held theories of Newton were shown not to be correct in all circumstances. Beginning in 1900, Max Planck, Albert Einstein, Niels Bohr and others developed quantum theories to explain various anomalous experimental results, by introducing discrete energy levels. Not only did quantum mechanics show that the laws of motion did not hold on small scales, but even more disturbingly, the theory of general relativity, proposed by Einstein in 1915, showed that the fixed background of spacetime, on which both Newtonian mechanics and special relativity depended, could not exist. In 1925, Werner Heisenberg and Erwin Schrödinger formulated quantum mechanics, which explained the preceding quantum theories. The observation by Edwin Hubble in 1929 that the speed at which galaxies recede positively correlates with their distance, led to the understanding that the universe is expanding, and the formulation of the Big Bang theory by Georges Lemaître.

File:Trinity explosion.jpg

From the late 1920s to the present, there was rapid development in the field of Signal Production-Reproduction for video acquisition and replay. Dr. August Karolus at the University of Leipzig, Germany, first developed a television signal. His student and lab assistant Dr. Erhard Kietz researched frequency constancy of electric tuning forks for his dissertation in 1939, later emirating to the U.S.A. where he developed several patents in the field of video signals for Ampex Corporation.

Further developments took place during World War II, which led to the practical application of radar and the development and use of the atomic bomb. Though the process had begun with the invention of the cyclotron by Ernest O. Lawrence in the 1930s, physics in the postwar period entered into a phase of what historians have called "Big Science", requiring massive machines, budgets, and laboratories in order to test their theories and move into new frontiers. The primary patron of physics became state governments, who recognized that the support of "basic" research could often lead to technologies useful to both military and industrial applications. Currently, general relativity and quantum mechanics are inconsistent with each other, and efforts are underway to unify the two.


The history of modern chemistry can be taken to begin with the distinction of chemistry from alchemy by Robert Boyle in his work The Sceptical Chymist, in 1661 (although the alchemical tradition continued for some time after this) and the gravimetric experimental practices of medical chemists like William Cullen, Joseph Black, Torbern Bergman and Pierre Macquer. Another important step was made by Antoine Lavoisier (Father of Modern Chemistry) through his recognition of oxygen and the law of conservation of mass, which refuted phlogiston theory. The theory that all matter is made of atoms, which are the smallest constituents of matter that cannot be broken down without losing the basic chemical and physical properties of that matter, was provided by John Dalton in 1803, although the question took a hundred years to settle as proven. Dalton also formulated the law of mass relationships. In 1869, Dmitri Mendeleev composed his periodic table of elements on the basis of Dalton's discoveries.

The synthesis of urea by Friedrich Wöhler opened a new research field, organic chemistry, and by the end of the 19th century, scientists were able to synthesize hundreds of organic compounds. The later part of the 19th century saw the exploitation of the Earth's petrochemicals, after the exhaustion of the oil supply from whaling. By the twentieth century, systematic production of refined materials provided a ready supply of products which provided not only energy, but also synthetic materials for clothing, medicine, and everyday disposable resources. Application of the techniques of organic chemistry to living organisms resulted in physiological chemistry, the precursor to biochemistry. The twentieth century also saw the integration of physics and chemistry, with chemical properties explained as the result of the electronic structure of the atom. Linus Pauling's book on The Nature of the Chemical Bond used the principles of quantum mechanics to deduce bond angles in ever-more complicated molecules. Pauling's work culminated in the physical modelling of DNA, the secret of life (in the words of Francis Crick, 1953). In the same year, the Miller-Urey experiment demonstrated in a simulation of primordial processes, that basic constituents of proteins, simple amino acids, could themselves be built up from simpler molecules.



Geology existed as a cloud of isolated, disconnected ideas about rocks, minerals, and landforms long before it became a coherent science. Theophrastus' work on rocks Peri lithōn remained authoritative for millennia: its interpretation of fossils was not overturned until after the Scientific Revolution. Chinese polymath Shen Kua (1031–1095) was the first to formulate hypotheses for the process of land formation. Based on his observation of fossils in a geological stratum in a mountain hundreds of miles from the ocean, he deduced that the land was formed by erosion of the mountains and by deposition of silt.


Geology was not systematically restructured during the Scientific Revolution, but individual theorists made important contributions. Robert Hooke, for example, formulated theory of earthquakes, and Nicholas Steno developed the theory of superposition and argued that fossils were the remains of once-living creatures. Beginning with Thomas Burnet's Sacred Theory of the Earth in 1681, natural philosophers began to explore the idea that the Earth had changed over time. Burnet and his contemporaries interpreted Earth's past in terms of events described in the Bible, but their work laid the intellectual foundations for secular interpretations of Earth history.

Modern geology, like modern chemistry, gradually evolved during the 1700s and early 1800s. Benoît de Maillet and the Comte de Buffon argued that Earth was much older than the 6,000 years envisioned by biblical scholars. Jean-Étienne Guettard and Nicolas Desmarest hiked central France and recorded their observations on some of the first geological maps. Abraham Werner created a systematic classification scheme for rocks and minerals—an achievement as significant for geology as that of Linnaeus was for biology. Werner also proposed a generalized interpretation of Earth history, as did contemporary Scottish polymath James Hutton. Georges Cuvier and Alexandre Brongniart, expanding on the work of Steno, argued that layers of rock could be dated by the fossils they contained: a principle first applied to the geology of the Paris Basin. The use of index fossils became a powerful tool for making geological maps, because it allowed geologists to correlate the rocks in one locality with those of similar age in other, distant localities. Over the first half of the 19th century, geologists such as Charles Lyell, Adam Sedgwick, and Roderick Murchison applied the new technique to rocks throughout Europe and eastern North America, setting the stage for more detailed, government-funded mapping projects in later decades.

Midway through the 19th century, the focus of geology shifted from description and classification to attempts to understand how the surface of the Earth changed. The first comprehensive theories of mountain building were proposed during this period, as were the first modern theories of earthquakes and volcanoes. Louis Agassiz and others established the reality of continent-covering ice ages, and "fluvialists" like Andrew Crombie Ramsay argued that river valleys were formed, over millions of years by the rivers that flow through them. After the discovery of radioactivity, radiometric dating methods were developed, starting in the 1900s. Alfred Wegener's theory of "continental drift" was widely dismissed when it was proposed in the 1910s, but new data gathered in the 1950s and 1960s led to the theory of plate tectonics, which provided a plausible mechanism for it. Plate tectonics also provided a unified explanation for a wide range of seemingly unrelated geological phenomena. Since 1970 it has been the unifying principle in geology.

Geologists' embrace of plate tectonics was part of a broadening of the field from a study of rocks into a study of the Earth as a planet. Other elements of this transformation include: geophysical studies of the interior of the Earth, the grouping of geology with meteorology and oceanography as one of the "earth sciences", and comparisons of Earth and the solar system's other rocky planets.


Aristarchus of Samos published work on how to determine the sizes and distances of the Sun and the Moon, and Eratosthenes used this work to figure the size of the Earth. Hipparchus later discovered the precession of the Earth.

Advances in astronomy and in optical systems in the 19th century resulted in the first observation of an asteroid (1 Ceres) in 1801, and the discovery of Neptune in 1846.

George Gamow, Ralph Alpher, and Robert Hermann had calculated that there should be evidence for a Big Bang in the background temperature of the universe.[93] In 1964, Arno Penzias and Robert Wilson[94] discovered a 3 kelvin background hiss in their Bell Labs radiotelescope, which was evidence for this hypothesis, and formed the basis for a number of results that helped determine the age of the universe.

Supernova SN1987A was observed by astronomers on Earth both visually, and in a triumph for neutrino astronomy, by the solar neutrino detectors at Kamiokande. But the solar neutrino flux was a fraction of its theoretically-expected value. This discrepancy forced a change in some values in the standard model for particle physics.

Biology, medicine, and geneticsEdit

File:DNA replication split.svg

In 1847, Hungarian physician Ignác Fülöp Semmelweis dramatically reduced the occurrency of puerperal fever by simply requiring physicians to wash their hands before attending to women in childbirth. This discovery predated the germ theory of disease. However, Semmelweis' findings were not appreciated by his contemporaries and came into use only with discoveries by British surgeon Joseph Lister, who in 1865 proved the principles of antisepsis. Lister's work was based on the important findings by French biologist Louis Pasteur. Pasteur was able to link microorganisms with disease, revolutionizing medicine. He also devised one of the most important methods in preventive medicine, when in 1880 he produced a vaccine against rabies. Pasteur invented the process of pasteurization, to help prevent the spread of disease through milk and other foods.[95]

Perhaps the most prominent, controversial and far-reaching theory in all of science has been the theory of evolution by natural selection put forward by the British naturalist Charles Darwin in his book On the Origin of Species in 1859. Darwin proposed that the features of all living things, including humans, were shaped by natural processes over long periods of time. Implications of evolution on fields outside of pure science have led to both opposition and support from different parts of society, and profoundly influenced the popular understanding of "man's place in the universe". However, Darwinian evolutionary models do not directly impact the study of genetics. In the early 20th century, the study of heredity became a major investigation after the rediscovery in 1900 of the laws of inheritance developed by the Moravian[96] monk Gregor Mendel in 1866. Mendel's laws provided the beginnings of the study of genetics, which became a major field of research for both scientific and industrial research. By 1953, James D. Watson, Francis Crick and Rosalind Franklin clarified the basic structure of DNA, the genetic material for expressing life in all its forms.[97] In the late 20th century, the possibilities of genetic engineering became practical for the first time, and a massive international effort began in 1990 to map out an entire human genome (the Human Genome Project) has been touted as potentially having large medical benefits.



The discipline of ecology typically traces its origin to the synthesis of Darwinian evolution and Humboldtian biogeography, in the late 19th and early 20th centuries. Equally important in the rise of ecology, however, were microbiology and soil science—particularly the cycle of life concept, prominent in the work Louis Pasteur and Ferdinand Cohn. The word ecology was coined by Ernst Haeckel, whose particularly holistic view of nature in general (and Darwin's theory in particular) was important in the spread of ecological thinking. In the 1930s, Arthur Tansley and others began developing the field of ecosystem ecology, which combined experimental soil science with physiological concepts of energy and the techniques of field biology. The history of ecology in the 20th century is closely tied to that of environmentalism; the Gaia hypothesis in the 1960s and more recently the scientific-religious movement of Deep Ecology have brought the two closer together.

Social sciencesEdit

Successful use of the scientific method in the physical sciences led to the same methodology being adapted to better understand the many fields of human endeavor. From this effort the social sciences have been developed.

Political science in Ancient IndiaEdit

The most studied literature on political science from Ancient India is an ancient Indian treatise on statecraft, economic policy and military strategy which identifies its author by the names Kautilya[98] and Viṣhṇugupta,[99] who are traditionally identified with Chāṇakya (c. 350–-283 BCE). In this treatise, the behaviors and relationships of the people, the King, the State, the Government Superintendents, Courtiers, Enemies, Invaders, and Corporations are analysed and documented. Roger Boesche describes the Arthaśāstra as "a book of political realism, a book analysing how the political world does work and not very often stating how it ought to work, a book that frequently discloses to a king what calculating and sometimes brutal measures he must carry out to preserve the state and the common good."[100]

Political science in the Western and Islamic CulturesEdit

While, in the Western Culture, the study of politics is first found in Ancient Greece, political science is a late arrival in terms of social sciences[citation needed]. However, the discipline has a clear set of antecedents such as moral philosophy, political philosophy, political economy, history, and other fields concerned with normative determinations of what ought to be and with deducing the characteristics and functions of the ideal form of government. In each historic period and in almost every geographic area, we can find someone studying politics and increasing political understanding.

Although the roots of politics may be in Prehistory, the antecedents of European politics trace their roots back even earlier than Plato and Aristotle, particularly in the works of Homer, Hesiod, Thucydides, Xenophon, and Euripides. Later, Plato analyzed political systems, abstracted their analysis from more literary- and history- oriented studies and applied an approach we would understand as closer to philosophy. Similarly, Aristotle built upon Plato's analysis to include historical empirical evidence in his analysis.

During the rule of Rome, famous historians such as Polybius, Livy and Plutarch documented the rise of the Roman Republic, and the organization and histories of other nations, while statesmen like Julius Caesar, Cicero and others provided us with examples of the politics of the republic and Rome's empire and wars. The study of politics during this age was oriented toward understanding history, understanding methods of governing, and describing the operation of governments.

With the fall of the Roman Empire, there arose a more diffuse arena for political studies. The rise of monotheism and, particularly for the Western tradition, Christianity, brought to light a new space for politics and political action[citation needed]. During the Middle Ages, the study of politics was widespread in the churches and courts. Works such as Augustine of Hippo's The City of God synthesized current philosophies and political traditions with those of Christianity, redefining the borders between what was religious and what was political. Most of the political questions surrounding the relationship between Church and State were clarified and contested in this period.

In the Middle East and later other Islamic areas, works such as the Rubaiyat of Omar Khayyam and Epic of Kings by Ferdowsi provided evidence of political analysis, while the Islamic aristotelians such as Avicenna and later Maimonides and Averroes, continued Aristotle's tradition of analysis and empiricism, writing commentaries on Aristotle's works.

During the Italian Renaissance, Niccolò Machiavelli established the emphasis of modern political science on direct empirical observation of political institutions and actors. Later, the expansion of the scientific paradigm during the Enlightenment further pushed the study of politics beyond normative determinations[citation needed]. In particular, the study of statistics, to study the subjects of the state, has been applied to polling and voting.

Modern Political ScienceEdit

In the 20th century, the study of ideology, behaviouralism and international relations led to a multitude of 'pol-sci' subdisciplines including rational choice theory, voting theory, game theory (also used in economics), psephology, political geography/geopolitics, political psychology/political sociology, political economy, policy analysis, public administration, comparative political analysis and peace studies/conflict analysis.

At the beginning of the 21st century, political scientists have increasingly deployed deductive modelling and systematic empirical verification techniques (quantitative methods) brining their discipline closer to the scientific mainstream [citation needed].


Historical linguistics emerged as an independent field of study at the end of the 18th century. Sir William Jones proposed that Sanskrit, Persian, Greek, Latin, Gothic, and Celtic languages all shared a common base. After Jones, an effort to catalog all languages of the world was made throughout the 19th century and into the 20th century. Publication of Ferdinand de Saussure's Cours de linguistique générale created the development of descriptive linguistics. Descriptive linguistics, and the related structuralism movement caused linguistics to focus on how language changes over time, instead of just describing the differences between languages. Noam Chomsky further diversified linguistics with the development of generative linguistics in the 1950s. His effort is based upon a mathematical model of language that allows for the description and prediction of valid syntax. Additional specialties such as sociolinguistics, cognitive linguistics, and computational linguistics have emerged from collaboration between linguistics and other disciplines.



The basis for classical economics forms Adam Smith's An Inquiry into the Nature and Causes of the Wealth of Nations, published in 1776. Smith criticized mercantilism, advocating a system of free trade with division of labour. He postulated an "Invisible Hand" that large economic systems could be self-regulating through a process of enlightened self-interest. Karl Marx developed an alternative economical system, called Marxian economics. Marxian economics is based on the labor theory of value and assumes the value of good to be based on the amount of labor required to produce it. Under this assumption, capitalism was based on employers not paying the full value of workers labor to create profit. The Austrian school responded to Marxian economics by viewing entrepreneurship as driving force of economic development. This replaced the labor theory of value by a system of supply and demand.

In the 1920s, John Maynard Keynes prompted a division between microeconomics and macroeconomics. Under Keynesian economics macroeconomic trends can overwhelm economic choices made by individuals. Governments should promote aggregate demand for goods as a means to encourage economic expansion. Following World War II, Milton Friedman created the concept of monetarism. Monetarism focuses on using the supply and demand of money as a method for controlling economic activity. In the 1970s, monetarism has adapted into supply-side economics which advocates reducing taxes as a means to increase the amount of money available for economic expansion.

Other modern schools of economic thought are New Classical economics and New Keynesian economics. New Classical economics was developed in the 1970s, emphasizing solid microeconomics as the basis for macroeconomic growth. New Keynesian economics was created partially in response to New Classical economics, and deals with how inefficiencies in the market create a need for control by a central bank or government.


The end of the 19th century marks the start of psychology as a scientific enterprise. The year 1879 is commonly seen as the start of psychology as an independent field of study. In that year Wilhelm Wundt founded the first laboratory dedicated exclusively to psychological research (in Leipzig). Other important early contributors to the field include Hermann Ebbinghaus (a pioneer in memory studies), Ivan Pavlov (who discovered classical conditioning), William James, and Sigmund Freud. Freud's influence has been enormous, though more as cultural icon than a force in scientific psychology.

The 20th century saw a rejection of Freud's theories as being too unscientific, and a reaction against Edward Titchener's atomistic approach of the mind. This led to the formulation of behaviorism by John B. Watson, which was popularized by B.F. Skinner. Behaviorism proposed epistemologically limiting psychological study to overt behavior, since that could be reliably measured. Scientific knowledge of the "mind" was considered too metaphysical, hence impossible to achieve.

The final decades of the 20th century have seen the rise of a new interdisciplinary approach to studying human psychology, known collectively as cognitive science. Cognitive science again considers the mind as a subject for investigation, using the tools of psychology, linguistics, computer science, philosophy, and neurobiology. New methods of visualizing the activity of the brain, such as PET scans and CAT scans, began to exert their influence as well, leading some researchers to investigate the mind by investigating the brain, rather than cognition. These new forms of investigation assume that a wide understanding of the human mind is possible, and that such an understanding may be applied to other research domains, such as artificial intelligence.


Ibn Khaldun can be regarded as the earliest scientific systematic sociologist.[101] The modern sociology, emerged in the early 19th century as the academic response to the modernization of the world. Among many early sociologists (e.g., Émile Durkheim), the aim of sociology was in structuralism, understanding the cohesion of social groups, and developing an "antidote" to social disintegration. Max Weber was concerned with the modernization of society through the concept of rationalization, which he believed would trap individuals in an "iron cage" of rational thought. Some sociologists, including Georg Simmel and W. E. B. Du Bois, utilized more microsociological, qualitative analyses. This microlevel approach played an important role in American sociology, with the theories of George Herbert Mead and his student Herbert Blumer resulting in the creation of the symbolic interactionism approach to sociology.

American sociology in the 1940s and 1950s was dominated largely by Talcott Parsons, who argued that aspects of society that promoted structural integration were therefore "functional". This structural functionalism approach was questioned in the 1960s, when sociologists came to see this approach as merely a justification for inequalities present in the status quo. In reaction, conflict theory was developed, which was based in part on the philosophies of Karl Marx. Conflict theorists saw society as an arena in which different groups compete for control over resources. Symbolic interactionism also came to be regarded as central to sociological thinking. Erving Goffman saw social interactions as a stage performance, with individuals preparing "backstage" and attempting to control their audience through impression management. While these theories are currently prominent in sociological thought, other approaches exist, including feminist theory, post-structuralism, rational choice theory, and postmodernism.


Anthropology can best be understood as an outgrowth of the Age of Enlightenment. It was during this period that Europeans attempted systematically to study human behaviour. Traditions of jurisprudence, history, philology and sociology developed during this time and informed the development of the social sciences of which anthropology was a part.

At the same time, the romantic reaction to the Enlightenment produced thinkers such as Johann Gottfried Herder and later Wilhelm Dilthey whose work formed the basis for the culture concept which is central to the discipline. Traditionally, much of the history of the subject was based on colonial encounters between Europe and the rest of the world, and much of 18th- and 19th-century anthropology is now classed as forms of scientific racism.

During the late 19th-century, battles over the "study of man" took place between those of an "anthropological" persuasion (relying on anthropometrical techniques) and those of an "ethnological" persuasion (looking at cultures and traditions), and these distinctions became part of the later divide between physical anthropology and cultural anthropology, the latter ushered in by the students of Franz Boas.

In the mid-20th century, much of the methodologies of earlier anthropological and ethnographical study were reevaluated with an eye towards research ethics, while at the same time the scope of investigation has broadened far beyond the traditional study of "primitive cultures" (scientific practice itself is often an arena of anthropological study).

The emergence of paleoanthropology, a scientific discipline which draws on the methodologies of paleontology, physical anthropology and ethology, among other disciplines, and increasing in scope and momentum from the mid-20th century, continues to yield further insights into human origins, evolution, genetic and cultural heritage, and perspectives on the contemporary human predicament as well.

Emerging disciplinesEdit

During the 20th century, a number of interdisciplinary scientific fields have emerged. Three examples will be given here:

Communication studies combines animal communication, information theory, marketing, public relations, telecommunications and other forms of communication.

Computer science, built upon a foundation of theoretical linguistics, discrete mathematics, and electrical engineering, studies the nature and limits of computation. Subfields include computability, computational complexity, database design, computer networking, artificial intelligence, and the design of computer hardware. One area in which advances in computing have contributed to more general scientific development is by facilitating large-scale archiving of scientific data. Contemporary computer science typically distinguishes itself by emphasising mathematical 'theory' in contrast to the practical emphasis of software engineering.

Materials science has its roots in metallurgy, minerology, and crystallography. It combines chemistry, physics, and several engineering disciplines. The field studies metals, ceramics, plastics, semiconductors, and composite materials.

Academic studyEdit

As an academic field, history of science began with the publication of William Whewell's History of the Inductive Sciences (first published in 1837). A more formal study of the history of science as an independent discipline was launched by George Sarton's publications, Introduction to the History of Science (published in 1927)[102] and the Isis journal (founded in 1912). The history of mathematics, history of technology, and history of philosophy are distinct areas of research and are covered in other articles. Mathematics is closely related to but distinct from natural science (at least in the modern conception). Technology is likewise closely related to but clearly differs from the search for empirical truth. Philosophy differs from science in its engagement in analysis and normative discourse, among other differences. In practice science, mathematics, technology, and philosophy are obviously deeply entwined, and clear lines demarcating them are not evident until the 19th century (when science first became professionalized). History of science has therefore been deeply informed by the histories of mathematics, technology, and philosophy—even as those fields have become increasingly autonomous.

History of science is an academic discipline, with an international community of specialists. Main professional organizations for this field include the History of Science Society, the British Society for the History of Science, and the European Society for the History of Science.

Theories and sociology of the history of scienceEdit

Much of the study of the history of science has been devoted to answering questions about what science is, how it functions, and whether it exhibits large-scale patterns and trends.[103] The sociology of science in particular has focused on the ways in which scientists work, looking closely at the ways in which they "produce" and "construct" scientific knowledge. Since the 1960s, a common trend in science studies (the study of the sociology and history of science) has been to emphasize the "human component" of scientific knowledge, and to de-emphasize the view that scientific data are self-evident, value-free, and context-free.[104] The field of Science and Technology Studies, an area that overlaps and often informs historical studies of science, focuses on the social context of science in both contemporary and historical periods.

A major subject of concern and controversy in the philosophy of science has been the nature of theory change in science. Karl Popper argued that scientific knowledge is progressive and cumulative; Thomas Kuhn, that scientific knowledge moves through "paradigm shifts" and is not necessarily progressive; and Paul Feyerabend, that scientific knowledge is not cumulative or progressive and that there can be no demarcation in terms of method between science and any other form of investigation.[105]

Since the publication of Kuhn's The Structure of Scientific Revolutions in 1970,[106] historians, sociologists, and philosophers of science have debated the meaning and objectivity of science.

See alsoEdit


  1. W. C. Dampier Wetham, Science, in Encyclopædia Britannica, 11th ed. (New York: Encyclopedia Britannica, Inc, 1911); M. Clagett, Greek Science in Antiquity (New York: Collier Books, 1955); D. Pingree, Hellenophilia versus the History of Science, Isis 83, 559 (1982); Pat Munday, entry "History of Science", New Dictionary of the History of Ideas (Charles Scribner's Sons, 2005).
  2. Paul Hoffman, The man who loved only numbers: the story of Paul Erdös and the search for mathematical truth, (New York: Hyperion), 1998, p.187. ISBN 0-7868-6362-5
  3. A. Aaboe (May 2, 1974), "Scientific Astronomy in Antiquity", Philosophical Transactions of the Royal Society 276 (1257): 21–42,, retrieved on 9 March 2010 
  4. Homer's Odyssey stated that "the Egyptians were skilled in medicine more than any other art". [1]
  5. Microsoft Word - Proceedings-2001.doc
  6. Lloyd, G. E. R. "The development of empirical research", in his Magic, Reason and Experience: Studies in the Origin and Development of Greek Science.
  7. Boyer (1991). "Euclid of Alexandria". pp. 119. "The Elements of Euclid not only was the earliest major Greek mathematical work to come down to us, but also the most influential textbook of all times. [...] The first printed versions of the Elements appeared at Venice in 1482, one of the very earliest of mathematical books to be set in type; it has been estimated that since then at least a thousand editions have been published. Perhaps no book other than the Bible can boast so many editions, and certainly no mathematical work has had an influence comparable with that of Euclid's Elements." 
  8. Sergent, Bernard (1997) (in French). Genèse de l'Inde. Paris: Payot. pp. 113. ISBN 2228891169. 
  9. Coppa, A.; et al. (2006-04-06). "Early Neolithic tradition of dentistry: Flint tips were surprisingly effective for drilling tooth enamel in a prehistoric population". Nature 440: 755. doi:10.1038/440755a. 
  10. Bisht, R. S. (1982). "Excavations at Banawali: 1974-77". in Possehl, Gregory L. (ed.). Harappan Civilization: A Contemporary Perspective. New Delhi: Oxford and IBH Publishing Co.. pp. 113–124. 
  11. 11.0 11.1 11.2 Sarma (2008), Astronomy in India
  12. Indian medicine has a long history. Its earliest concepts are set out in the sacred writings called the Vedas, especially in the metrical passages of the Atharvaveda, which may possibly date as far back as the 2nd millennium BC. According to a later writer, the system of medicine called Āyurveda was received by a certain Dhanvantari from Brahma, and Dhanvantari was deified as the god of medicine. In later times his status was gradually reduced, until he was credited with having been an earthly king who died of snakebite. — Underwood & Rhodes (2008)
  13. Dwivedi & Dwivedi (2007)
  14. C. S. Smith, A History of Metallography, University Press, Chicago (1960); Juleff 1996; Srinivasan, Sharda and Srinivasa Rangnathan 2004
  15. Henry Yule quoted the 12th century Arab Edrizi.
    • Srinivasan, Sharda and Srinivasa Rangnathan. 2004. India’s Legendary Wootz Steel. Bangalore: Tata Steel. 2004
  16. Mainak Kumar Bose, Late Classical India, A. Mukherjee & Co., 1988, p. 277.
  17. Ifrah, Georges. 1999. The Universal History of Numbers : From Prehistory to the Invention of the Computer, Wiley. ISBN 0-471-37568-3.
  18. O'Connor, J.J. and E.F. Robertson. 2000. 'Indian Numerals', MacTutor History of Mathematics Archive, School of Mathematics and Statistics, University of St. Andrews, Scotland.
  19. George G. Joseph (1991). The crest of the peacock. London.
  20. Needham, Joseph (1986). Science and Civilization in China: Volume 3, Mathematics and the Sciences of the Heavens and the Earth. Taipei: Caves Books Ltd. Page 208.
  21. Sivin, Nathan (1995). Science in Ancient China. Brookfield, Vermont: VARIORUM, Ashgate Publishing. III, page 32.
  22. (Novum Organum, Liber I, CXXIX - Adapted from the 1863 translation)
  23. Agustín Udías, Searching the Heavens and the Earth: The History of Jesuit Observatories. (Dordrecht, The Netherlands: Kluwer Academic Publishers, 2003). p.53
  24. Joseph Needham, Science and Civilization in China, volume 1. Cambridge University Press, 1954. 581.
  25. F. M. Cornford, Principium Sapientiae: The Origins of Greek Philosophical Thought, (Gloucester, Mass., Peter Smith, 1971), p. 159.
  26. Dicks, D.R. (1970). Early Greek Astronomy to Aristotle. Ithaca, N.Y.: Cornell University Press. pp. 72–198. ISBN 9780801405617. 
  27. De Lacy O'Leary (1949), How Greek Science Passed to the Arabs, London: Routledge & Kegan Paul Ltd., ISBN 0 7100 1903 3
  28. G. E. R. Lloyd, Early Greek Science: Thales to Aristotle, (New York: W. W. Norton, 1970), pp. 144-6.
  29. Lloyd (1973), p. 177.
  30. Calinger, Ronald (1999). A Contextual History of Mathematics. Prentice-Hall. pp. 150. ISBN 0-02-318285-7. "Shortly after Euclid, compiler of the definitive textbook, came Archimedes of Syracuse (ca. 287–212 B.C.), the most original and profound mathematician of antiquity." 
  31. O'Connor, J.J. and Robertson, E.F. (February 1996). "A history of calculus". University of St Andrews. Retrieved on 2007-08-07. 
  32. Plutarch, Life of Caesar 49.3.
  33. Linda E. Voigts, "Anglo-Saxon Plant Remedies and the Anglo-Saxons", Isis, 70 (1979): 250-268; reprinted in Michael H. Shank, The Scientific Enterprise in Antiquity and the Middle Ages, Chicago: Univ. of Chicago Pr., 2000, pp. 163-181. ISBN 0-226-74951-7.
  34. Faith Wallis, Bede: The Reckoning of Time, Liverpool: Liverpool Univ. Pr., 2004, pp. xviii-xxxiv. ISBN 0-85323-693-3.
  35. 35.0 35.1 35.2 Robert Briffault (1928). The Making of Humanity, p. 191. G. Allen & Unwin Ltd.
  36. David Agar (2001). Arabic Studies in Physics and Astronomy During 800 - 1400 AD. University of Jyväskylä.
  37. Bradley Steffens (2006), Ibn al-Haytham: First Scientist, Morgan Reynolds Publishing, ISBN 1599350246.
  38. Abdus Salam, H. R. Dalafi, Mohamed Hassan (1994). Renaissance of Sciences in Islamic Countries, p. 162. World Scientific, ISBN 9971-5-0713-7.
  39. (Saliba 1994, pp. 245, 250, 256–257)
  40. (Hobson 2004, p. 178)
  41. Abid Ullah Jan (2006), After Fascism: Muslims and the struggle for self-determination, "Islam, the West, and the Question of Dominance", Pragmatic Publishings, ISBN 978-0-9733687-5-8.
  42. Salah Zaimeche (2003), An Introduction to Muslim Science, FSTC.
  43. Ahmad Y Hassan and Donald Routledge Hill (1986), Islamic Technology: An Illustrated History, p. 282, Cambridge University Press
  44. 44.0 44.1 (Huff 2003)
  45. Saliba, George (Autumn 1999). "Seeking the Origins of Modern Science? Review of Toby E. Huff, The Rise of Early Modern Science: Islam, China and the West". Bulletin of the Royal Institute for Inter-Faith Studies 1 (2). Retrieved on 2008-04-10.</cite>  </li>
  46. 46.0 46.1 Will Durant (1980). The Age of Faith (The Story of Civilization, Volume 4), p. 162-186. Simon & Schuster. ISBN 0-671-01200-2. </li>
  47. Fielding H. Garrison, An Introduction to the History of Medicine: with Medical Chronology, Suggestions for Study and Biblographic Data, p. 86 </li>
  48. Muhammad Iqbal (1934, 1999). The Reconstruction of Religious Thought in Islam. Kazi Publications. ISBN 0-686-18482-3. </li>
  49. <cite style="font-style:normal" class="book" id="CITEREFEdmund2005">Edmund, Norman W. (2005). End the Biggest Educational and Intellectual Blunder in History: A $100,000 Challenge to Our Top Educational Leaders. Scientific Method Publishing. p. 447. ISBN 0963286668.</cite>  </li>
  50. Cite error: Invalid <ref> tag; no text was provided for refs named Hogendijk</li>
  51. Cite error: Invalid <ref> tag; no text was provided for refs named Hatfield</li>
  52. <cite style="font-style:normal">Simon, Gérard (2006). "The Gaze in Ibn al-Haytham". The Medieval History Journal 9 (1): 89–98. doi:10.1177/097194580500900105.</cite>  </li>
  53. <cite style="font-style:normal">Bellosta, Hélèna (2002). "Burning Instruments: From Diocles to Ibn Sahl". Arabic Sciences and Philosophy 12: 285–303. Cambridge University Press. doi:10.1017/S095742390200214X.</cite>  </li>
  54. <cite style="font-style:normal">Rashed, Roshdi (2 August 2002). "Portraits of Science: A Polymath in the 10th Century". Science 297 (5582). doi:10.1126/science.1074591. PMID 12161634.</cite>  </li>
  55. <cite style="font-style:normal">Lindberg, David C. (1967). "Alhazen's Theory of Vision and Its Reception in the West". Isis 58 (3): 321–341 [332]. doi:10.1086/350266.</cite>  </li>
  56. Rosanna Gorini (2003). "Al-Haytham the Man of Experience. First Steps in the Science of Vision", International Society for the History of Islamic Medicine. Institute of Neurosciences, Laboratory of Psychobiology and Psychopharmacology, Rome, Italy. </li>
  57. <cite style="font-style:normal" class="Journal" id="harv">Rosen, Edward (1985), "The Dissolution of the Solid Celestial Spheres", Journal of the History of Ideas 46 (1): 19–20 & 21</cite>  </li>
  58. <cite style="font-style:normal" class="web" id="CITEREF2004">"Stanford Encyclopedia of Philosophy". 2004. Retrieved on 2008-01-22.</cite>  </li>
  59. <cite style="font-style:normal" class="Journal" id="harv">Saliba, George (1994), A History of Arabic Astronomy: Planetary Theories During the Golden Age of Islam, New York University Press, pp. 254 & 256–257, ISBN 0814780237</cite>  </li>
  60. Bartel Leendert van der Waerden (1987). "The Heliocentric System in Greek, Persian and Hindu Astronomy", Annals of the New York Academy of Sciences 500 (1), 525–545 [534-537]. </li>
  61. <cite style="font-style:normal" class="Journal" id="harv">Nasr, Seyyed H. (1st edition in 1964, 2nd edition in 1993), An Introduction to Islamic Cosmological Doctrines (2nd ed.), 1st edition by Harvard University Press, 2nd edition by State University of New York Press, pp. 135–136, ISBN 0791415155</cite>  </li>
  62. <cite style="font-style:normal" class="Journal" id="harv">Baker, A.; Chapter, L. (2002), "Part 4: The Sciences"</cite> , in <cite style="font-style:normal" class="book" id="CITEREFSharif">Sharif, M. M.. "A History of Muslim Philosophy". Philosophia Islamica.</cite>  </li>
  63. Fielding H. Garrison, An Introduction to the History of Medicine with Medical Chronology, Suggestions for Study and Biblographic Data, p. 86 </li>
  64. <cite style="font-style:normal">Derewenda, Zygmunt S. (2007). "On wine, chirality and crystallography". Acta Crystallographica Section A: Foundations of Crystallography 64 (Pt 1): 246–258 [247]. doi:10.1107/S0108767307054293. PMID 18156689.</cite>  </li>
  65. John Warren (2005). "War and the Cultural Heritage of Iraq: a sadly mismanaged affair", Third World Quarterly 26 (4-5): 815-830 </li>
  66. <cite style="font-style:normal">Lindberg, David C. (1967). "Alhazen's Theory of Vision and Its Reception in the West". Isis 58 (3): 321–341. doi:10.1086/350266.</cite>  </li>
  67. <cite style="font-style:normal">Faruqi, Yasmeen M. (2006). "Contributions of Islamic scholars to the scientific enterprise". International Education Journal 7 (4): 391–396.</cite>  </li>
  68. Nasr, Seyyed Hossein (2007). "Avicenna". Encyclopedia Britannica Online. Retrieved 2010-03-06. </li>
  69. 69.0 69.1 Jacquart, Danielle (2008). "Islamic Pharmacology in the Middle Ages: Theories and Substances". European Review (Cambridge University Press) 16: 219–27. </li>
  70. David W. Tschanz, MSPH, PhD (August 2003). "Arab Roots of European Medicine", Heart Views 4 (2). </li>
  71. D. Craig Brater and Walter J. Daly (2000), "Clinical pharmacology in the Middle Ages: Principles that presage the 21st century", Clinical Pharmacology & Therapeutics 67 (5), p. 447-450 [448]. </li>
  72. A. Martin-Araguz, C. Bustamante-Martinez, Ajo V. Fernandez-Armayor, J. M. Moreno-Martinez (2002). "Neuroscience in al-Andalus and its influence on medieval scholastic medicine", Revista de neurología 34 (9), p. 877-892. </li>
  73. Zafarul-Islam Khan, At The Threshhold Of A New Millennium – II, The Milli Gazette. </li>
  74. Akbar S. Ahmed (1984). "Al-Beruni: The First Anthropologist", RAIN 60, p. 9-10. </li>
  75. Akbar Ahmed (2002). "Ibn Khaldun’s Understanding of Civilizations and the Dilemmas of Islam and the West Today", Middle East Journal 56 (1), p. 25. </li>
  76. H. Mowlana (2001). "Information in the Arab World", Cooperation South Journal 1. </li>
  77. Mohamad Abdalla (Summer 2007). "Ibn Khaldun on the Fate of Islamic Science after the 11th Century", Islam & Science 5 (1), p. 61-70. </li>
  78. Salahuddin Ahmed (1999). A Dictionary of Muslim Names. C. Hurst & Co. Publishers. ISBN 1850653569. </li>
  79. Dr. S. W. Akhtar (1997). "The Islamic Concept of Knowledge", Al-Tawhid: A Quarterly Journal of Islamic Thought & Culture 12 (3). </li>
  80. 80.0 80.1 Erica Fraser. The Islamic World to 1600, University of Calgary. </li>
  81. Ahmad Y Hassan, Factors Behind the Decline of Islamic Science After the Sixteenth Century </li>
  82. William of Malmesbury, Gesta Regum Anglorum / The history of the English kings, ed. and trans. R. A. B. Mynors, R. M. Thomson, and M. Winterbottom, 2 vols., Oxford Medieval Texts (1998–9) </li>
  83. R. W. Vernon, G. McDonnell and A. Schmidt, 'An integrated geophysical and analytical appraisal of early iron-working: three case studies' Historical Metallurgy 31(2) (1998), 72-5 79. </li>
  84. David Derbyshire, Henry "Stamped Out Industrial Revolution", The Daily Telegraph (21 June 2002) </li>
  85. <cite style="font-style:normal" class="web" id="CITEREFHans_Thijssen2003">Hans Thijssen (2003-01-30). "Condemnation of 1277". Stanford Encyclopedia of Philosophy. University of Stanford. Retrieved on 2009-09-14.</cite>  </li>
  86. Edward Grant, The Foundations of Modern Science in the Middle Ages: Their Religious, Institutional, and Intellectual Contexts, (Cambridge: Cambridge Univ. Pr., 1996), pp. 127-31. </li>
  87. Edward Grant, A Source Book in Medieval Science, (Cambridge: Harvard Univ. Pr., 1974), p. 232 </li>
  88. David C. Lindberg, Theories of Vision from al-Kindi to Kepler, (Chicago: Univ. of Chicago Pr., 1976), pp. 140-2. </li>
  89. Edward Grant, The Foundations of Modern Science in the Middle Ages: Their Religious, Institutional, and Intellectual Contexts, (Cambridge: Cambridge Univ. Pr., 1996), pp. 95-7. </li>
  90. Edward Grant, The Foundations of Modern Science in the Middle Ages: Their Religious, Institutional, and Intellectual Contexts, (Cambridge: Cambridge Univ. Pr., 1996), pp. 100-3. </li>
  91. Allen Debus, Man and Nature in the Renaissance, (Cambridge: Cambridge Univ. Pr., 1978). </li>
  92. Precise titles of these landmark books can be found in the collections of the Library of Congress. A list of these titles can be found in Leonard C. Bruno (1989), The Landmarks of Science. ISBN 0-8160-2137-6 </li>
  93. Alpher, Herman, and Gamow. Nature 162,774 (1948). </li>
  94. Wilson's 1978 Nobel lecture </li>
  95. <cite style="font-style:normal" class="book" id="CITEREFCampbellBrad_Williamson.3B_Robin_J._Heyden2006">Campbell, Neil A.; Brad Williamson; Robin J. Heyden (2006). Biology: Exploring Life. Boston, Massachusetts: Pearson Prentice Hall. ISBN 0-13-250882-6. OCLC 75299209.</cite>  </li>
  96. <cite style="font-style:normal" class="book" id="CITEREFHenig2000">Henig, Robin Marantz (2000). The Monk in the Garden : The Lost and Found Genius of Gregor Mendel, the Father of Genetics. Houghton Mifflin. ISBN 0-395-97765-7. OCLC 43648512. "The article, written by an obscure Moravian monk named Gregor Mendel..."</cite>  </li>
  97. James D. Watson and Francis H. Crick. "Letters to Nature: Molecular structure of Nucleic Acid." Nature 171, 737–738 (1953). </li>
  98. <cite style="font-style:normal">Mabbett, I. W. (1 April 1964). "The Date of the Arthaśāstra". Journal of the American Oriental Society 84 (2): 162–169. doi:10.2307/597102. ISSN 0003-0279.</cite> 
    <cite style="font-style:normal" class="book" id="CITEREFTrautmann1971">Trautmann, Thomas R. (1971). Kauṭilya and the Arthaśāstra: A Statistical Investigation of the Authorship and Evolution of the Text. Leiden: E.J. Brill. pp. 10. "while in his character as author of an arthaśāstra he is generally referred to by his gotra name, Kauṭilya."</cite> 
  99. Mabbett 1964
    Trautmann 1971:5 "the very last verse of the the unique instance of the personal name Viṣṇugupta rather than the gotra name Kauṭilya in the Arthaśāstra.
  100. <cite style="font-style:normal" class="book" id="CITEREFBoesche2002">Boesche, Roger (2002). The First Great Political Realist: Kautilya and His Arthashastra. Lanham: Lexington Books. pp. 17. ISBN 0-7391-0401-2.</cite>  </li>
  101. Muhammed Abdullah Enan, Ibn Khaldun: His Life and Works, The Other Press, 2007, pp. 104–105. ISBN 9839541536. </li>
  102. Sarton 1927-48 </li>
  103. What is this thing called science? </li>
  104. The Sociology of Science: Theoretical and Empirical Investigations By Robert King Merton </li>
  105. Science Teaching: The Role of History and Philosophy of Science By Michael Robert Matthews </li>
  106. Summary on Google books </li></ol>


External linksEdit

Community content is available under CC-BY-SA unless otherwise noted.