All Questions
Tagged with wavelength spectroscopy
24
questions
1
vote
1
answer
26
views
Spectroscopy on colored flames
When observing colored fire through a spectrometer after adding substances like copper chloride or magnesium sulfate to change its color, what specific spectra are typically observed? How does the ...
- 43
0
votes
1
answer
39
views
What determines the wavelength in absorption?
When looking at absorption or reflectance spectra, say in the range of 400nm to 2500nm, you can see peaks (or dips) at certain wavelengths, that are characteristic for the material absorbing and ...
- 111
1
vote
0
answers
83
views
Converting $\rm W/m2/sr/nm$ to $\rm kR/nm$ for any wavelength
I have atmospheric spectra given in W/m2/sr/nm units and wavelength in nm. I want to convert W/m2/sr/nm to kilo Rayleigh/nm (kR/nm) for any wavelength.
I tried the following method from this paper: ...
- 11
1
vote
3
answers
72
views
Wavelengths of light outside our solar system
The question might have been asked before. Our Sun's rays decompose into 7 elementary colors by using a prism or spectrometry. Can the the colors (their number and wave length in the spectrum ) be ...
- 1,032
3
votes
3
answers
740
views
Why can’t we see atoms in an optical microscope?
I know, the answer to this question may seem obvious: The resolution/magnification of an optical microscope is limited by the minimum wavelength one uses. This is due to the diffraction limit.
However,...
- 469
1
vote
0
answers
29
views
Why is first line of Lyman series considered largest ultraviolet wavelength in hydrogen spectrum
I was reading a book which contains a numerical question about largest wavelength of hydrogen spectrum in ultraviolet region. In the solution, it mentions the largest wavelength in ultraviolet region ...
- 379
3
votes
3
answers
2k
views
Why don't we get infinite energy from a continous emission spectrum?
If the spectrum emitted contains all kinds of photons of all kinds of wavelengths, doesn't that mean it should have infinite number of photons of very small energies? For example, 4000 angstrom to ...
1
vote
0
answers
16
views
Why refer to Near Infrared Reflectance Spectroscopy (NIRS) while using a much wider spectrum (350-2500 nm)?
I am puzzled about the way a method names vs. specificity of the method differ in the literature around spectroscopy applications.
A very widely used field spectroradiometer, recording reflectance ...
- 11
1
vote
3
answers
183
views
What are the advantages of radio spectroscopy? [closed]
What is the main purpose for radio spectroscopy? What information of the atomic structure of atoms can we gain from using radio frequency radiation rather than X-rays? Since the wavelength of radio ...
- 324
1
vote
4
answers
113
views
Question about Atomic spectra [closed]
I have basically 3 questions:-
Why does atomic spectra (of any element) gives discrete lines
What would it indicate if the lines were continuous
Can the lines overlap? If not, why?
1
vote
1
answer
855
views
Why do molecules form band spectrum?
If we observe any textbook they say that molecules form band spectrum. But a H2 molecule is just 2 H atoms and both form line spectra but somehow combination of 2 H atoms formed band spectrum. Because ...
0
votes
1
answer
40
views
Question about spectrum emissions
I was studying about spectrum emissions but I have a question.
For example if I have $2$ electrons from different atoms with different distances from the nucleus, then I hit them with fire causing ...
-3
votes
3
answers
339
views
Has anyone tried to find the wavelength to the Corona virus cell? [closed]
I have seen websites and videos that show how cancer cells can be destroyed using sound resonance oscillation. So has anyone heard of anyone who is in the field of sound resonance trying to capture ...
- 21
0
votes
0
answers
123
views
Units in Representation Of Energy Density Spectrum
In most of the texts, I referred to The Axis being labelled with Units as shown above.
But I also found few images with different Notation (1/Units) Being Followed as shown Below.
The units of the ...
- 273
0
votes
0
answers
23
views
Is there a difference in wavelength emission spectra of ZnS:Ag when its irradiated with protons vs. gammas?
How would I measure this, because I couldn't find this information in literature as of yet? I have neutron (to produce protons by recoil) and gamma sources, but I don't have a pure neutron source, and ...
- 325