結果 : how long did the longest light bulb last
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0:40

How long did Thomas Edison's light bulb last?

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The oldest continually running lightbulb in the world - Livermore's Centennial Light Bulb.

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5:04

If all humans died, when would the last light go out?

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Ask History: Who Really Invented the Light Bulb? | History

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121 Years Long Lasting Bulb #shorts

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