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The dates listed in this section refer to the earliest evidence of an invention found and dated by archaeologists (or in a few cases, suggested by indirect evidence). Dates are often approximate and change as more research is done, reported and seen. Older examples of any given technology are often found.
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.
Willis Carrier's invention of air conditioning in 1902 marked a pivotal moment in human history, transforming the way people interact with indoor spaces. Before his breakthrough, buildings were subject to the whims of nature, often becoming unbearably hot and humid during the summer months.
2 History of associated inventions timeline. 3 Innovations in consumer electronics. ... Date Invention/Discovery Inventor(s) 1900: Old quantum theory: Planck 1905:
1933 – Ernst Ruska: Invention of the electron microscope; 1935 – Subrahmanyan Chandrasekhar: Chandrasekhar limit for black hole collapse; 1937 - Majorana particle, hypothesized as a fermion that is its own antiparticle. 1937 – Muon discovered by Carl David Anderson and Seth Neddermeyer; 1938 – Pyotr Kapitsa: Superfluidity discovered
1590: earliest date of a claimed Hans Martens/Zacharias Janssen invention of the compound microscope (claim made in 1655). [3] [4] After 1609: Galileo Galilei is described as being able to close focus his telescope to view small objects close up [5] and/or looking through the wrong end in reverse to magnify small objects. [6]
The post 30 Questions To Prove You Really Know Invention History first appeared on Bored Panda. ... In this quiz, you’ll come across the invention dates of various things, ranging from the year ...
11 February 1876: Elisha Gray invents a liquid transmitter for use with a telephone, but he did not make one. 14 February 1876 about 9:30 am: Gray or his lawyer brings Gray's patent caveat for the telephone to the Washington, D.C. Patent Office (a caveat was a notice of intention to file a patent application.