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What has been the most important electrical device invented?
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The most important electrical device invented is the light bulb. Its invention in 1879 by Thomas Edison in the United States and Joseph Swan in Britain changed everyday life across the world. Until then, the only artificial lights were oil and gas lamps.
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Previous:
Back
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Book:
1001
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Section:
Science and Technology
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Chapter:
Electricity and Magnetism
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