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The mercury barometer measured the atmospheric pressure which, in turn, measured the temperature. This invention began the movement to predict weather. Without it, we would have never been able to predict weather patterns or figure out averages.
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The piano gave way to a new type of entertainment.
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The invention of wrought iron rail helped evolve the slow, horse drawn wagons into trains. A month long trip could now take only a couple of days. This invention changed the way people moved from place to place and how goods/supplies/animals were transported.
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Today, nylon is used in everything from clothes to the bristles of your toothbrush. It has revolutionized how clothes are made and how long they last.
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The AbioCor or an artificial heart was invented by Abiomed.
