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Proved static electricity and lightning were the same thing.
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Invented the electric motor, still used in appliances today.
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Invented the Electric Telegraph, making sending messages long distance so much easier.
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Invented the generator which was able to produce a steady current of electricity.
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Invented a long lasting incandescent lightbulb.
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Invented first electric vacuum cleaner
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Invented first electric air conditioning system.
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First electric tape recorder.
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Invented first portable handset phone
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Automatic Teller Machines invented (ATM's).
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