All Questions
Tagged with electromagnetic-spectrum spectra
3
questions
6
votes
1
answer
402
views
Natural line width from absorption lines
Emission lines have a certain natural width. Due to the uncertainty principle systems that spontaneously decay or produce radiation have a fundamental energy blur, and their radiation has a ...
- 849
4
votes
3
answers
371
views
Spectrum of stars
If some specific metal is shown in a star's spectrum, does it indicate that the star has that specific metal? For example, the Sun, a G2 star, shows medium strength of Ionised Calcium in its spectrum, ...
- 1,296
1
vote
1
answer
280
views
How to calculate the redshift of a line in a bunch of line spectra?
If in a spectra, there are many lines, mixed with gravitational redshift and non-redshift lines. For example, in this paper, they identify lines both redshifted and no-redshifted. Then how can i ...
- 339