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…in Great Ideas


In 1901, German physicist Wilhelm Conrad Röntgen was awarded the Nobel Prize in physics for discovering X-rays.
Dutch inventor Christian Huygens is credited with creating the first pendulum -- or modern clock.
An English engineer named Thomas Savery invented the steam engine in 1698.
In 1836, English engineer William Cook built the first commercial electromagnetic telegraph.
The first computer was really just an adding machine, invented by Charles Babbage in 1822.
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Library
 
Book of Outstanding Americans


Book of World Records 2004

Encyclopedia of Women in the US

Girls, Growing up in the USA

We Are Americans

Gods, Goddesses, and Monsters

Visual Sports Encyclopedia

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