All Questions
5
questions
1
vote
1
answer
187
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Can something become hot enough that it stops glowing?
So I understand that matter emits EM waves when hot. And that the higher the temperature, the shorter the wavelength, so cooler flames start off orange and the hotter flames reach light blue and white....
- 131
0
votes
1
answer
110
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Max Planck - what's the $B$?
Planck says
$$B_\nu(T)=\frac{2\nu^2}{c^2}\,\frac{h\nu}{\mathrm{e}^{h\nu/k_BT}-1}.$$
It is power emitted per unit area per unit angle per unit frequency. This is what I'm curious now.
Let's say we ...
- 200
1
vote
2
answers
1k
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Why do hot objects tend to emit shorter wavelength? [closed]
So how do the temperature and wavelength related and why do hot objects tend to emit shorter wavelength?
- 866
1
vote
2
answers
463
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Black body/Sun radiation - λmax
The Sun's effective temperature is 5778K. Using Wien's law we can calculate the wavelength λmax in which we observe the maximum amount of radiation received from the black body. After doing the ...
- 13
6
votes
5
answers
19k
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Light emitted by an object according to its temperature
According to this picture
the light emitted by an object depends on its temperature.
That makes perfect sense when we heat a metal. As its temperature raises we see it red at first, then orange, ...
- 1,291