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This ia a pencil it was important invention because people wouldn't have to write with a feather and keep dipping it into the ink when it drys out.
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Used for mostly weather or to see that persons temperature in there body
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Developed better into the world of science in trying to discover new life sources on other planets.
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Intened for using in the military
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measures air presssure
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Was used for hard tough work in 1690
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made in harpsicord around 1720 by Bartolomeo Chstofori of Padua, Italy
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Invented by William Cullen and did not mean to create the refrigerator on purpose but he did and now we store our foods without them getting rotten.
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