# How is this derived?

1. Jul 23, 2007

### jairusgarcia

R=$$\epsilon$$$$\sigma$$T$$^{4}$$

$$\epsilon$$ --> emmisivity
$$\sigma$$ --> Steffan's constant
T[ --> Temp (in Kelvin)

thanks... ^_^

2. Jul 23, 2007

### CompuChip

Actually, I think that already is the Stefan-Boltzmann law; if you start from it you're done.

There is a derivation here, though generally I always check derivations on Wikipedia before I trust them

3. Jul 23, 2007

### jairusgarcia

oh... im sorry. i feel noobish! haha!

4. Jul 24, 2007

### CompuChip

Sucks when the answer was staring you right in the face huh?
Don't worry, happens to me all the time