Search results
Results from the WOW.Com Content Network
An incandescent gas mantle, gas mantle or Welsbach mantle is a device for generating incandescent bright white light when heated by a flame. The name refers to its original heat source in gas lights which illuminated the streets of Europe and North America in the late 19th century.
Hahn diligently amassed radioactive material by collecting small amounts from household products, such as Americium from smoke detectors, thorium from camping lantern mantles, radium from old clocks he had obtained from an antique store, and tritium from gunsights.
Yttrium is used in gas mantles for propane lanterns as a replacement for thorium, which is radioactive. [71] Garnets. Nd:YAG laser rod 0.5 cm (0.20 in) in diameter ...
The public is also exposed to radiation from consumer products, such as tobacco (polonium-210), combustible fuels (gas, coal, etc.), televisions, luminous watches and dials , airport X-ray systems, smoke detectors , electron tubes, and gas lantern mantles .
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 company changed its formulation to use non-radioactive materials, which apparently cost less and last longer. [27] [28]
Early in the 20th century, there was vigorous debate over whether candoluminescence is required to explain the behavior of Welsbach gas mantles or limelight. One counterargument was that since thorium oxide (for example) has much lower emissivity in the near infrared region than the shorter wavelength parts of the visible spectrum, it should ...
For premium support please call: 800-290-4726 more ways to reach us
Similarly, thorium gas mantles are very slightly radioactive when new, but become more radioactive after only a few months of storage as the daughters of 232 Th build up. Although it cannot be predicted whether any given atom of a radioactive substance will decay at any given time, the decay products of a radioactive substance are extremely ...