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6 Μαρ 2022 · (1707-1783, Swiss) introduced the modern notation for e, the square root of -1 (i), and trigonometric functions. Richard Feynman called his proof that eiπ = -1 "the most beautiful equation in mathematics" because it linked four of math's most important constants.
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20 Σεπ 2024 · The history of the telephone started in 1876 with Alexander Graham Bell’s invention, which made it possible to transmit speech over wires.
The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward.
3 Μαρ 2014 · The History of Tablet Computers: A timeline. Today's tablet landscape is dominated by Apple's iPad and Android devices from Samsung, Google and others, with Windows-based tablets from...
When was the first mobile phone invented? The first call made from a mobile phone happened on 3 April 1973 in New York City. It was made by the engineer Marty Cooper, who worked at the...
