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 filled the streets of Europe and North America in the late 19th century, mantle referring to the way it is hung above the flame. Today it is still used in portable camping lanterns, pressure lanterns and some oil lamps.
Gas mantles are usually sold as fabric items which, because of impregnation with metal nitrates, form a rigid but fragile mesh of metal oxides when heated during initial use; these metal oxides produce light from the heat of the flame whenever used. Thorium dioxide is commonly a major component; being radioactive it has led to concerns about the safety of those involved in manufacturing mantles. Normal use, however, poses little health risk.
Read more about Gas Mantle: Mechanism, History, Production
Famous quotes containing the words gas and/or mantle:
“one pale woman all alone,
The daylight kissing her wan hair,
Loitered beneath the gas lamps’ flare,
With lips of flame and heart of stone.”
—Oscar Wilde (1854–1900)
“At last he rose, and twitch’d his mantle blue,
Tomorrow to fresh woods and pastures new.”
—John Milton (1608–1674)