Gas mantle
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An incandescent gas mantle, gas mantle or Welsbach mantle is a device for generating bright white light when heated by a flame. The name refers to its original heat source in gas lights which illumina
A Coleman white gas lantern mantle glowing at full brightness
Hot gas mantles. The lowest visible mantle has partially broken, reducing its light output
An 85 mm Chance Brothers Incandescent Petroleum Vapour Installation
Gas mantle in a street lamp (cold)
Limelight
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Limelight 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
Gas mantle
…inside the mantle improves the transfer of heat from the flame to the mantle. For centuries, artificial light has been generated using open flames. Limelight was invented in the 1820s, but the temperature required to produce visible light through black-body radiation alone was too high to be practical for…
Heating calcium hydroxide (slaked lime) in a stove burner causes it to glow, although this is not as bright as a real limelight.
A 19th century limelight used for stage lighting. Collection: Stadsschouwburg (city theatre) Bruges, Belgium.