The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?
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When was the first lawn mower invented? |
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In which decade were the first successful diode and triode vacuum tubes invented? |
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Who is the English physicist responsible for the Big Bang Theory? |
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What game was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892? |
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Who had an explosive idea and first patented DYNAMITE? |
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Who invented the Spinning Jenny? |
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Which insurance salesman invented the fountain pen in 1884? |
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When was the first elevator built? |
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What charge card, developed in 1950, was the first to be accepted nationally in the US? |
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What Enrico Fermi invented? |
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