Answer to Question #21735 in Astronomy | Astrophysics for conniee
Hint - concider the structure of the human eye.
Then, volume of each eye is approximately4*pi/3 * 5^3 = 523.6 cm^3 = 5.236* 10^(-4) m^3
So, now we can find total volume of all human eyes at ourplanet
We assume that there are approximately 7*10^(9) people atthe moment. So volume of their eyes is
2* 5.236* 10^(-4) m^3*7*10^(9) =7330400 m^3
If 1000 m^3 caught 11 neutrinos,then 7330400 m^3 would catch
11* 7330400/1000 = 80 634,4 neutrinos
supposing every neutrino's cherenkov photons can be saw, wehave that
approximately 80000 human beings,therefore, actually 'saw' the explosion of SN1987a
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