We can heat a piece of metal to red hot and to white hot. Can we heat it until the metal glows blue hot? - red heat metal detector
If yes, please explain.
Wednesday, January 20, 2010
Red Heat Metal Detector We Can Heat A Piece Of Metal To Red Hot And To White Hot. Can We Heat It Until The Metal Glows Blue Hot?
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4 comments:
Not really. To achieve that, "Blue Heat", you have the peak of the spectrum (black body) emission in the region of the wavelength of the blue, the temperature of 7000 K or more is required. All known materials are vaporized in a gas plasma at this altitude. In addition, you can not behave as a black body more.
The site can give a better idea of what happened:
http://www.techmind.org/colour/coltemp.h ...
I have magnesium in a furnace heated by e-beam until it evaporates. The radiant light of MgO is very bright, almost "pure" white can be seen by welding glasses. But not blue.
Carbon bows (are) in my eyes in blue. One wonders whether the carbon can be regarded as a metal, and the light is probably ionized carbon vapor in the arc, rather than solid carbon electrodes hot enough to emit light.
The same with TIG (Tungsten Inert Gas) welding. I do not know what Im really see. Seems like a very bright white blue, but it is probably a metal / helium, argon tungsten or tungsten-nitrogen plasma, instead of hot, solid tungsten metal, which is the source of light. I see a blue color when the heat (and melting) of tungsten with an e-beam furnace, but it is a very bright white.
Certainly, but blue is a lower temperature than red or white. see a color / temp array spectral
White is the hot follow as we do. Rooms in all colors with blue in it.
Much more than the white-hot metal melts.
But it's very patriotic of you.
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