Timeline for What is the bigger number of particles crossing an area: the number of photons or the number of neutrinos? [closed]
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| Oct 30, 2015 at 11:25 | comment | added | Vendetta | @ChrisWhite For all of both particles. But I do want to know the proportion of those numbers to the sun quantities. I imagine that the sun accounts for almost all of photon radiation in the visible wavelengths, as we can't see most stars under daylight (certainly such observation is not something I'd expect at all wavelengths). I'll have to look up for some kind of place with all possible neutrino releasing mechanisms. I know they could be produced while the Big Bang happened, inside stars and in nuclear decay, and also in other physical contexts that are more complicated. | |
| Oct 30, 2015 at 3:10 | history | closed |
CuriousOne Kyle Kanos ProfRob ACuriousMind♦ user36790 |
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| Oct 30, 2015 at 0:41 | history | edited | Qmechanic♦ |
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| Oct 29, 2015 at 22:52 | comment | added | user10851 | Are you looking for just solar photons and solar neutrinos, or all photons and all neutrinos, or something else? | |
| Oct 29, 2015 at 22:21 | answer | added | Gert | timeline score: 2 | |
| Oct 29, 2015 at 22:00 | comment | added | Gert | @Vendetta: just look up how much energy the earth receives per unit of time, then divide by the energy of an average VIS photon. | |
| Oct 29, 2015 at 21:55 | comment | added | Vendetta | @Gert Thanks for your answer. Now I have to find out how to separate the solar contribution from the rest of the universe's contribution. Probably the energy will be useful for that. I do not know particle physics (I only saw lectures here and there), so I'm trying to learn a thing or two with this question (which apparently is a little discouraged here, as people downvote as a principle what they call homework questions, regardless of your level of knowledge). | |
| Oct 29, 2015 at 21:27 | comment | added | Gert | Wait! I know this one, is it $7 \times 10^{10} neutrinos\:\mathrm{ cm^{-2} s^{-1}}$? en.wikipedia.org/wiki/Solar_neutrino#Observed_data | |
| Oct 29, 2015 at 21:19 | history | edited | Vendetta |
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| Oct 29, 2015 at 21:13 | history | edited | Vendetta | CC BY-SA 3.0 |
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| Oct 29, 2015 at 20:45 | review | Close votes | |||
| Oct 30, 2015 at 3:10 | |||||
| Oct 29, 2015 at 20:36 | comment | added | Danu | @Vendetta That is indeed Mukhanov's (only) book on cosmology. | |
| Oct 29, 2015 at 20:35 | comment | added | Vendetta | @Danu Which book? Physical foundations of cosmology? And thanks for giving a helpful answer. | |
| Oct 29, 2015 at 20:29 | review | First posts | |||
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| Oct 29, 2015 at 20:29 | comment | added | Danu | Estimates for both quantities can be found in Mukhanov's book on cosmology. | |
| Oct 29, 2015 at 20:29 | history | edited | Danu |
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| Oct 29, 2015 at 20:29 | comment | added | CuriousOne | There are far more photons than neutrinos. That should be obvious from the peaks of their spectra. | |
| Oct 29, 2015 at 20:26 | history | asked | Vendetta | CC BY-SA 3.0 |