Inventors
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Elijah McCoy (1843 or 1844-1929) was a mechanical engineer and inventor.
Biographies of Some Great African-American Inventors.
Leo Hendrik Baekeland (1863 - 1944) was an American chemist who invented Velox photographic paper and Bakelite.
Invention of the Pencil. The lead pencil was invented in 1564 when a huge graphite mine was discovered in England.
In 1877, Thomas Alva Edison invented the first machine to record and play back sounds (the phonograph/record player).
Gunpowder was invented in China, probably during the 1000's. They used gunpowder to make fireworks and signal flares.
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Linus Yale Jr. (1821-1868) was an American mechanical engineer who developed the cylinder pin-tumbler lock.
Nikola Tesla (1856-1943) was a Serbian-American physicist, electrical engineer, and inventor who held 111 patents.
A telescope lets us view distant objects. Most telescopes use glass lenses and/or mirrors to detect visible light.
Leonardo da Vinci (1452-1519) was an Italian inventor, artist, architect, and scientist.
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