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.
[A].
George Washington
[B].
Alexander Hamilton
[C].
John Adams
[D].
Thomas Jefferson
Answer: Option D
Explanation:
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).
But declaration of independence was done by benjamin franklin.
Lilu said:
(Nov 19, 2015)
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Ziya Sulthana said:
(Apr 28, 2016)
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Aftab said:
(Jul 21, 2016)
Good useful question. Please provide more details related to the question.
Netra Vyas said:
(Aug 10, 2016)
But the Cipher Disk was invented by the Italian architect and author Leon Battista Alberti.
Aishwarya said:
(Dec 24, 2020)
Thomas Jefferson created Jefferson disks in the 1790s. Jefferson called his invention the "wheel cypher. ' It had 36 wooden disks, each with 26 letters in random order ("jumbled and without order, ' according to Jefferson) along the edge, like the ridges of a coin. The device was used briefly and then forgotten. Cypher wheels were later independently invented. Jefferson's papers describing his "cypher' were rediscovered in 1922.
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