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Some archaeologists use the lowercase letters bp, bc and ad as terminology for uncalibrated dates for these eras. [10] The Centre for Ice and Climate at the University of Copenhagen instead uses the unambiguous "b2k", for "years before 2000 AD", often in combination with the Greenland Ice Core Chronology 2005 (GICC05) time scale. [11]
11 BC in various calendars; Gregorian calendar: 11 BC XI BC: Ab urbe condita: 743: Ancient Greek era: 192nd Olympiad, year 2: Assyrian calendar: 4740: Balinese saka calendar: N/A: Bengali calendar: −603: Berber calendar: 940: Buddhist calendar: 534: Burmese calendar: −648: Byzantine calendar: 5498–5499: Chinese calendar: 己酉年 (Earth ...
For systemic use of experimentation in science and contributions to scientific method, physics and observational astronomy. The work of Principia by Newton, who also refined the scientific method, and who is widely regarded as the most important figure of the Scientific Revolution. [4] [5] Science (ancient) Thales (c. 624/623 – c. 548/545 BC ...
The following dates are approximations. 700 BC: Pythagoras's theorem is discovered by Baudhayana in the Hindu Shulba Sutras in Upanishadic India. [18] However, Indian mathematics, especially North Indian mathematics, generally did not have a tradition of communicating proofs, and it is not fully certain that Baudhayana or Apastamba knew of a proof.
Physics is a branch of science in which the primary objects of study are matter and energy.These topics were discussed by philosophers across many cultures in ancient times, but they had no means to distinguish causes of natural phenomena from superstitions.
This timeline lists significant discoveries in physics and the laws of nature, including experimental discoveries, theoretical proposals that were confirmed experimentally, and theories that have significantly influenced current thinking in modern physics. Such discoveries are often a multi-step, multi-person process.
424 BC Aristophanes' "lens" is a glass globe filled with water.(Seneca says that it can be used to read letters no matter how small or dim) [4] 4th century BC Mo Di first mentions the camera obscura, a pin-hole camera. 3rd century BC Euclid is the first to write about reflection and refraction and notes that light travels in straight lines [4]
Hero also described a shortest path algorithm, that is, given two points A and B on one side of a line, find a point C on the straight line that minimizes AC + BC. This led him to formulate the principle of the shortest path of light : If a ray of light propagates from point A to point B within the same medium, the path-length followed is the ...