This statesman,politican,scholar,inventor,and one of early presidents of USA invented the swivel chair,the spherical sundial,the moldboard plow,and the cipher wheel.
Thomas Jefferson (April 13, 1743 – July 4, 1826) was the third President of the United States (1801-1809) and the principal author of the Declaration of Independence (1776).
Who is the english physicist responsible for the "Big Bang Theory"?
George Gamow. Gamow, who died in 1968, was a physicist, who published “Thirty Years that Shook Physics”.
In the 1700s,who would pay the postage fee for letters before the stamp was invented?
Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.
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Which insurance salesman invented the fountain pen in 1884?
Lewis Edson Waterman patented the first practical fountain pen in 1884.