All Questions
8
questions
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76
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How to define relevant emission spectrum lines? [closed]
I am building a tool which extracts the elemental composition of a light source using its emission spectrum. Therefor, I'm currently writing down the emission spectra of individual elements, but I'm ...
- 13
2
votes
2
answers
145
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Hydrogen line spectrum [closed]
lately I have come across the hydrogen line spectrum, I quite understand it as I could easily solve all numerical questions. However, conceptually I feel stuck at two points.
If an electron absorbs ...
- 57
2
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0
answers
100
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How can energy conservation not be violated in stimulated emission processes?
Fermis golden rule, derived from time-dependent perturbation theory, give the rate for a quantum system, disturbed by a weak harmonic pertubation with frequency $\omega$, to transition from a state $|...
user224659
0
votes
1
answer
71
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Are there gaps present between lines in a continous line spectrum? [duplicate]
It might seem counter-intuitive for gaps to be formed in a "continuous spectrum", but according to Planck energy carried by a photon is quantised and can have only discrete values so ...
- 753
0
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3
answers
102
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Why don't appear all objects to be white?
When you shine light on an atom, it absorbs some of the wavelenghts; the rest determine its color. However, as far as I've understood, the absorbed wavelenghts exite the electrones moving them to a ...
- 41
0
votes
2
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540
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Is sunlight a continous spectrum?
In school, I have been tought that sunlight emits all wavelenghts of visible light.
However, shouldn't also the sun have the footprints of its components? Shouldn't it's spectrum be similar to the ...
- 41
1
vote
1
answer
470
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Radiation Emission in Rotating and Vibrating polar molecules
So, I am currently doing a course in Molecular Spectroscopy and I am finding some concepts very non-intuitive and very difficult to understand(maybe due to lack of my knowledge or the lack of ...
- 773
2
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0
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231
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Rotational Spectrum of a Diatomic Molecule
The rotational energy levels of a diatomic molecule are given by $$E_l=\frac{\hbar^2}{2I}l(l+1)$$ where $l$ is an integer. If the molecule is a dipole it can emit or absorb electromagnetic radiation ...
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