Limelight (also known as Drummond light or calcium light) is a non-electric type of stage lighting that was once used in theatres and music halls. An intense illumination is created when a flame fed by oxygen and hydrogen is directed at a cylinder of quicklime (calcium oxide), due to a combination of incandescence and candoluminescence.
Limelight (also known as Drummond light or calcium light) is a non-electric type of stage lighting that was once used in theatres and music halls. An intense illumination is created when a flame fed by oxygen and hydrogen is directed at a cylinder of quicklime (calcium oxide), due to a combination of incandescence and candoluminescence.
Source: Wikipedia "Limelight" · CC BY-SA 4.0
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