network profile
| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 4 months |
| seen | yesterday | |
| stats | profile views | 2 |
|
Jan 19 |
comment |
Radiated power and energy density for a black-body Thank you for your work! |
|
Jan 15 |
comment |
Radiated power and energy density for a black-body I am sorry to bother you again, but in Wikipedia the factor is $c/4\pi$. In fact, the energy density is $(8\pi h\nu^3)/(c^3(e^{\beta h\nu}-1))$, but the "spectral radiation" only $(2 h\nu^3)/(c^2(e^{\beta h\nu}-1))$.Could you please explain to me why there is the extra $\pi$ factor? |
|
Jan 15 |
awarded | Scholar |
|
Jan 15 |
accepted | Radiated power and energy density for a black-body |
|
Jan 15 |
comment |
Radiated power and energy density for a black-body Thank you, you were very clear. I did not think of putting it backwards, i.e. calculating the needed surface per unit power instead of the emitted power per unit surface. |
|
Jan 15 |
asked | Radiated power and energy density for a black-body |
