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## Homework Statement

1) Calculate approx. how many Cosmic Microwave Background-photons that you would absorb per second if you were in space.

## The Attempt at a Solution

Ok, I know that the CMB-photons fit with a blackbody spectrum with T = 2.725 K. So the total amount of photons I find by using

n = beta * T^3, where beta = 2.03*10^7 m^{-3} * K^{-3}.

This is the amount of photons per cubicmeter, which is also the amount that would pass through my body (assumed spherical) per second.

Am I correct?

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