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The candle was invented.
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The first pair of eyeglasses were invented
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The first compound microscope is invented
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The first telescope was invented.
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The speed of light is deduced and measured.
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The first pair of bifocals were invented.
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The first television set ws invented.
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The first electric lamp is invented.
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An instant camera is first demonstrated.
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The first laser is approved for lasik surgery.
