Pre-electricity theatre spotlights produced light by directing a flame at calcium oxide (quicklime)

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Amazing Facts: Pre-electricity theatre spotlights produced light by directing a flame at calcium oxide (quicklime)

Did you know? Pre-electricity theatre spotlights produced light by directing a flame at calcium oxide (quicklime). These kinds of lights were called limelights and this is the origin of the phrase “in the limelight” to mean “at the centre of attention”. source

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