All Questions
4 questions
0
votes
1
answer
64
views
Do gases emit radiation at all wavelength? [duplicate]
According to Planck's law, all matter emits radiation at all wavelengths but is this statement true for gases and pure elements? Gases like hydrogen and helium have specific emission spectrums and I ...
- 647
2
votes
1
answer
112
views
Do all matter emits radiation at all wavelengths? [duplicate]
Does all matter emit radiation at all wavelengths? Do gasses also emit radiation at all wavelengths since they have a specific emission spectrum? Shouldn't they only emit radiation according to their ...
- 647
1
vote
1
answer
570
views
Thermal radiation vs emission spectra of gases
I am a high school student and I am very confused in absorption and emission spectrum of gases, for e,g take hydrogen at room temperature for simplicity, so that we can talk in terms of Bohr's model ...
- 470
0
votes
1
answer
56
views
Thermal emission from a metal surface
We know from Kirchhoffs law that at thermal equilibrium the absorbance is equal to the emissivity. Let's consider some opaque layers of Al, Ag, Au for which I found reflectances at google:
When I ...
- 25