Nikola Tesla - HISTORY

Croatian-born Nikola Tesla was a genius inventor who discovered the electric alternating current. Learn more about this rival of Thomas Edison and his impact on the modern world in this video.

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Thomas Edison wasn’t the only inventor to lay claim to the light bulb, so whose bright idea was it? Ask History finds out.

In a turn-of-the-century advertisement, Thomas Edison's newly invented phonograph "talks" to customers, describing its unique characteristics.