Register to reply

Black Body radiation

by dsdsuster
Tags: black, body, radiation
Share this thread:
dsdsuster
#1
Apr9-12, 01:56 PM
P: 30
Can someone help explain what's going on here?
http://hyperphysics.phy-astr.gsu.edu...radpow.html#c1

Specifically the part about how radiated power is greater than perpendicular power.
I also don't understand why the power is being averaged over the various angles. Doesn't it make more sense to add the powers from light arriving at different angles to get the total energy transmitted?
Phys.Org News Partner Physics news on Phys.org
Physicists discuss quantum pigeonhole principle
First in-situ images of void collapse in explosives
The first supercomputer simulations of 'spin?orbit' forces between neutrons and protons in an atomic nucleus
mikeph
#2
Apr9-12, 05:31 PM
P: 1,212
I can't follow this very well, nothing is defined and I can't work out the overall goal.

I think it's saying that the radiation going through the specified surface from some angle is not perpendicular, so you need to use cos(theta) to find the perpendicular component of the vector.


Register to reply

Related Discussions
Black body radiation Introductory Physics Homework 0
Black Body radiation Atomic, Solid State, Comp. Physics 4
Black body radiation Quantum Physics 1
Black body radiation, need help Introductory Physics Homework 2
Black body Radiation Introductory Physics Homework 2