- #1
Buzz Bloom
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The folowing quote is from a Wikpedia article https://en.wikipedia.org/wiki/Neutrino .
"From cosmological arguments, relic background neutrinos are estimated to have density of 56 of each type per cubic centimeter and temperature 1.9 K (1.7×10−4 eV) if they are massless, much colder if their mass exceeds 0.001 eV."
There is no reference given for the "facts" presented in the quote. I entered a request for such a reference on the Talk page, but I expect it will take some time for this reference to become included. Can anyone help me find a reference about this that will include an explanation about assumptions and the method used to calculate the numbers?
"From cosmological arguments, relic background neutrinos are estimated to have density of 56 of each type per cubic centimeter and temperature 1.9 K (1.7×10−4 eV) if they are massless, much colder if their mass exceeds 0.001 eV."
There is no reference given for the "facts" presented in the quote. I entered a request for such a reference on the Talk page, but I expect it will take some time for this reference to become included. Can anyone help me find a reference about this that will include an explanation about assumptions and the method used to calculate the numbers?
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