Timeline for How can absorption spectra form if atoms can't remain in an excited state?
Current License: CC BY-SA 3.0
11 events
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| Jan 27, 2023 at 15:58 | comment | added | PhysicsDave | In the sun we have many nuclear reactions, abundance of energy with neutrons exciting many atoms ... the atoms emitting many photons of certain wavelengths in all directions. On earth we have very few nuclear reactions .... the photons are absorbed by atoms and molecules ..... most photons are converted to vibrations in the molecules (i.e. temperature increase) and at night these vibrations/molecules emit IR photons back into space. | |
| Jan 27, 2023 at 5:40 | answer | added | user356765 | timeline score: 0 | |
| Feb 11, 2017 at 2:09 | comment | added | Adomas Baliuka | Electronic states may have lifetimes of several seconds in practical experiments. | |
| Feb 20, 2015 at 14:15 | vote | accept | Luke | ||
| Feb 20, 2015 at 5:13 | history | tweeted | twitter.com/#!/StackPhysics/status/568639600706629632 | ||
| Feb 20, 2015 at 0:54 | history | edited | Luke | CC BY-SA 3.0 |
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| Feb 19, 2015 at 23:59 | vote | accept | Luke | ||
| Feb 19, 2015 at 23:59 | |||||
| Feb 19, 2015 at 23:55 | answer | added | unsym | timeline score: 7 | |
| Feb 19, 2015 at 22:51 | comment | added | BowlOfRed | Just because one frequency is absorbed does not mean that it is re-emitted. Instead the total energy absorbed by a single (high-energy) photon may be released as multiple (lower-energy) photons. | |
| Feb 19, 2015 at 22:06 | history | edited | Luke |
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| Feb 19, 2015 at 21:51 | history | asked | Luke | CC BY-SA 3.0 |