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
Comment on Smells Great
Bubs@lemmy.zip 2 days ago
1000°c seems accurate:
Fun little science fact: Heated objects glow the same colors no matter what they are made of. It’s called Black Body Radiation. The color chart shows what temperatures correspond with various “colors” of glow.
icelimit@lemmy.ml 2 days ago
Gladaed@feddit.org 2 days ago
Unless it is a gray body. For somewhat accurate measurements you must do math.
Agent641@lemmy.world 2 days ago
Aluminium doesn’t glow, even when molten though?
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.
Gladaed@feddit.org 2 days ago
Real bodies are gray, not black.
BreadOven@lemmy.world 2 days ago
All bodies matter.
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.
Nikls94@lemmy.world 2 days ago
Which makes iron a suitable substitute for tungsten at 3000 C
Natanael@infosec.pub 2 days ago
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 🤷