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Ben Franklin was the one that discovered electricity by trying a key to a kite in a lightening storm.
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The first electric motor was invented by Michael Faraday
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the first fuel cell was invented by Sir William Robert Grove
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First successful attempt with the light bulb was done by Thomas Edison
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They still work the same to this day but they are modernized to fit the likes of people.
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The first auto mobile was a single cylinder. These have changed a lot over time.
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This was invented by Henry Becquerel.
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The first air conditioning unit was invented by Willis Carrier.
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The first all coal power plant was the Lakeside Power Plant in Wisconsin.
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The first cell phone was relatively large compared to the ones we have today.