Ah yeah. Sorry I meant neutrinos per meter squared per second - I'll edit my post.
Thanks for your reply. Is it appropriate to assume the neutrinos are traveling at a velocity of c and are massless? I thought that when neutrinos decoupled (2s after the Big Bang) they had a velocity close to...
I thought that 0.01 m2 was quite low, too. Perhaps he meant 0.1 m2.
Assuming the neutrinos are ultra-relativistic I got a flux of 1.19 x 1017 m-2 s-1... which I'm pretty sure is higher than the solar neutrino flux. o_O
I used:
Flux ϕ = (c . uv(T)) / (3 . <Ev>) = (c . uv(T)) / (3 . kB . T)...
1. Problem
"Estimate the flux of neutrinos passing through your body per second if the present energy density of neutrinos from the Big Bang is 0.2 MeV/m3. Assume that you are a standard size covering 0.01 m2".
Homework Equations
nv = Uv(T) / <Ev>
The Attempt at a Solution
I've assumed that...
Problem:
My homework constantly refers to something called the optical path length, L - I'm not exactly sure what this is. It's in the equation below. This question is in relation to astrophysics and dust extinction in the Interstellar Medium.
Relevant equations:
Dust optical depth, τλ =...