Comment on Smells Great

Bubs@lemmy.zip ⁨2⁩ ⁨days⁩ ago

• Natanael@infosec.pub ⁨2⁩ ⁨days⁩ ago

  Heated objects glow the same colors no matter what they are made of

  True only if light emissions aren’t dominated by chemical effects or filtered by structural effects. Plenty of materials burn at different colors. Although if you wait out the chemical reactions and keep it heated, it does eventually end up with just blackbody radiation too 🤷

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• icelimit@lemmy.ml ⁨2⁩ ⁨days⁩ ago

  But corrected by emissivity factor. Emissivity factor is also not constant, and changes as both a function of material and temperature. Probably associated with band gap fluctuating wrt. Temperature

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• Gladaed@feddit.org ⁨2⁩ ⁨days⁩ ago

  Unless it is a gray body. For somewhat accurate measurements you must do math.

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• Agent641@lemmy.world ⁨2⁩ ⁨days⁩ ago

  Aluminium doesn’t glow, even when molten though?

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  • i_love_FFT@jlai.lu ⁨2⁩ ⁨days⁩ ago

    That simply means it must melt below 600°C.

    A quick wiki check says it melts at 660. I guess if you’re in a really dark room, you could see the glow.

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  • Gladaed@feddit.org ⁨2⁩ ⁨days⁩ ago

    Real bodies are gray, not black.

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    • BreadOven@lemmy.world ⁨2⁩ ⁨days⁩ ago

      All bodies matter.

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  • BurgerBaron@piefed.social ⁨2⁩ ⁨days⁩ ago

    Eventually will glow human eye visible if you keep heating it past useful temperatures. 1000’C+ starts getting red hot.

    Doesn’t emit light as readily as iron does, especially with iron’s oxide layer building up when heated.

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• Nikls94@lemmy.world ⁨2⁩ ⁨days⁩ ago

  Which makes iron a suitable substitute for tungsten at 3000 C

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