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A study in 1981 estimated that the dose from using a thorium mantle every weekend for a year would be 3–6 microsieverts (0.3–0.6 mrem), tiny in comparison to the normal annual background radiation dose of around 2.4 mSv (240 mrem), although this assumes the thorium remains intact rather than airborne. A person actually ingesting a mantle ...
The Coleman Lantern is a line of pressure lamps first introduced by the Coleman Company in 1914. This led to a series of lamps that were originally made to burn kerosene or gasoline. Current models use kerosene, gasoline, Coleman fuel or propane and use one or two mantles to produce an intense white light.
A glowing Coleman white gas lantern mantle. The glowing element is mainly ThO 2 doped with CeO 2 , heated by the Ce-catalyzed oxidation of the natural gas with air. Building on its distinct surface interactions, ceria finds further use as a sensor in catalytic converters in automotive applications, controlling the air-exhaust ratio to reduce NO ...
In the United States this technique was adopted by The Coleman Company and became their logo for the company. In the 1980s it was reported that Thorium's radio-daughters (Decay products) could be volatilized and released into the air upon incandescence of the mantle. [25] [26] A lawsuit (Wagner v. Coleman) was brought against Coleman. The ...
Gas lighting is still in common use for camping lights. Small portable gas lamps, connected to a portable gas cylinder, are a common item on camping trips. Mantle lamps powered by vaporized petrol, such as the Coleman lantern, are also available.
On 23 September 1885, Carl Auer von Welsbach received a patent on the gas flame heated incandescent mantle light. [8] In 1914, the Coleman Lantern, a similar pressure lamp was introduced by the US Coleman Company. [9] [10] [11] In 1915, during World War I, the Tilley company moved to Brent Street in Hendon, and began developing a kerosene ...
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