Portal:History of science
The History of Science Portal
The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology during the Bronze Age, Iron Age, classical antiquity, and the Middle Ages declined during the early modern period after the establishment of formal disciplines of science in the Age of Enlightenment.
Science's earliest roots can be traced to Ancient Egypt and Mesopotamia around 3000 to 1200 BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but continued to thrive in the Greek-speaking Byzantine Empire. Aided by translations of Greek texts, the Hellenistic worldview was preserved and absorbed into the Arabic-speaking Muslim world during the Islamic Golden Age. The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th century revived the learning of natural philosophy in the West. Traditions of early science were also developed in ancient India and separately in ancient China, the Chinese model having influenced Vietnam, Korea and Japan before Western exploration. Among the Pre-Columbian peoples of Mesoamerica, the Zapotec civilization established their first known traditions of astronomy and mathematics for producing calendars, followed by other civilizations such as the Maya.
Natural philosophy was transformed during the Scientific Revolution in 16th- to 17th-century Europe, as new ideas and discoveries departed from previous Greek conceptions and traditions. The New Science that emerged was more mechanistic in its worldview, more integrated with mathematics, and more reliable and open as its knowledge was based on a newly defined scientific method. More "revolutions" in subsequent centuries soon followed. The chemical revolution of the 18th century, for instance, introduced new quantitative methods and measurements for chemistry. In the 19th century, new perspectives regarding the conservation of energy, age of Earth, and evolution came into focus. And in the 20th century, new discoveries in genetics and physics laid the foundations for new sub disciplines such as molecular biology and particle physics. Moreover, industrial and military concerns as well as the increasing complexity of new research endeavors ushered in the era of "big science," particularly after World War II. (Full article...)
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The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in rotating spheres made of an aetherial, transparent fifth element (quintessence), like gems set in orbs. Since it was believed that the fixed stars did not change their positions relative to one another, it was argued that they must be on the surface of a single starry sphere.
In modern thought, the orbits of the planets are viewed as the paths of those planets through mostly empty space. Ancient and medieval thinkers, however, considered the celestial orbs to be thick spheres of rarefied matter nested one within the other, each one in complete contact with the sphere above it and the sphere below. When scholars applied Ptolemy's epicycles, they presumed that each planetary sphere was exactly thick enough to accommodate them. By combining this nested sphere model with astronomical observations, scholars calculated what became generally accepted values at the time for the distances to the Sun: about 4 million miles (6.4 million kilometres), to the other planets, and to the edge of the universe: about 73 million miles (117 million kilometres). The nested sphere model's distances to the Sun and planets differ significantly from modern measurements of the distances, and the size of the universe is now known to be inconceivably large and continuously expanding. (Full article...)Selected image
This watercolor depicts a native from the Tierra del Fuego, from around the time that Charles Darwin was on his Voyage of the Beagle (1830s). Darwin was taken aback at the crude savagery of the natives, in stark contrast to the civilised behaviour of the three Fuegians they were returning as missionaries (who had been given the names York Minster, Fuegia Basket and Jemmy Button). He described his first meeting with the native Fuegians as being "without exception the most curious and interesting spectacle I ever beheld: I could not have believed how wide was the difference between savage and civilised man: it is greater than between a wild and domesticated animal, inasmuch as in man there is a greater power of improvement." In contrast, he said of Jemmy that "It seems yet wonderful to me, when I think over all his many good qualities, that he should have been of the same race, and doubtless partaken of the same character, with the miserable, degraded savages whom we first met here." Four decades later, in The Descent of Man, he would use his impressions from this period as evidence that man had evolved civilization from a more primitive state.
Did you know
...that the word scientist was coined in 1833 by philosopher and historian of science William Whewell?
...that biogeography has its roots in investigations of the story of Noah's Ark?
...that the idea of the "Scientific Revolution" dates only to 1939, with the work of Alexandre Koyré?
Selected Biography -
Alan Mathison Turing OBE FRS (/ˈtjʊərɪŋ/; 23 June 1912 – 7 June 1954) was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist. Turing was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general-purpose computer. He is widely considered to be the father of theoretical computer science and artificial intelligence.
Born in London, Turing was raised in southern England. He graduated in maths from King's College, Cambridge, and in 1938, earned a maths PhD from Princeton University. During the Second World War, Turing worked for the Government Code and Cypher School at Bletchley Park, Britain's codebreaking centre that produced Ultra intelligence. He led Hut 8, the section responsible for German naval cryptanalysis. He devised techniques for speeding the breaking of German ciphers, including improvements to the pre-war Polish bomba method, an electromechanical machine that could find settings for the Enigma machine. Turing played a crucial role in cracking intercepted messages that enabled the Allies to defeat the Axis powers in many crucial engagements, including the Battle of the Atlantic. (Full article...)List of selected biographies |
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Selected anniversaries
April 15:
- 1415 - Death of Manuel Chrysoloras, Greek humanist and grammarian
- 1452 - Birth of Leonardo da Vinci, Italian Renaissance polymath (d. 1519)
- 1552 - Birth of Pietro Cataldi, Italian mathematician (d. 1626)
- 1704 - Death of Johann van Waveren Hudde, Dutch mathematician (b. 1628)
- 1707 - Birth of Leonhard Euler, Swiss mathematician (d. 1783)
- 1741 - Birth of Charles Willson Peale, American painter, soldier and naturalist (d. 1827)
- 1755 - Samuel Johnson's A Dictionary of the English Language published in London
- 1764 - Death of Peder Horrebow, Danish astronomer (b. 1679)
- 1765 - Death of Mikhail Lomonosov, Russian scientist and writer (b. 1711)
- 1772 - Birth of Étienne Geoffroy Saint-Hilaire, French naturalist (d. 1844)
- 1793 - Birth of Friedrich Georg Wilhelm von Struve, German astronomer (d. 1864)
- 1793 - Death of Ignacije Szentmartony, Croatian Jesuit missionary and geographer (b. 1718)
- 1809 - Birth of Hermann Grassmann, German mathematician (d. 1877)
- 1854 - Death of Arthur Aikin, English chemist, mineralogist, and writer (b. 1773)
- 1874 - Birth of Johannes Stark, German physicist, Nobel laureate (d. 1957)
- 1896 - Birth of Nikolay Nikolayevich Semyonov, Russian chemist, Nobel laureate (d. 1986)
- 1927 - Birth of Robert Mills, American physicist (d. 1999)
- 1993 - Death of John Tuzo Wilson, Canadian geologist (b. 1908)
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