According to some historians, the first spotlights were used in Paris opera houses in 1803. They involved the use of limelight. Invented by Henry Drummond, the technique was to heat a piece of lime with a flame of oxygen and hydrogen. This produced a hot white light that, when put behind a lens, could focus a hot spot of light in a directional manner. As you can see from the latest crop of followspots listed here, we’ve come a long way in 200 years.
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