- #1
ed2288
- 25
- 0
Hi everybody.
Apologies for asking what may be a very simple question, but in every textbook I've read, they say that the net flux through an area dA from an isotropic emitter is zero. But it also says that the sun is an isotropic emitter.
Now hold on, the net flux from the sun is clearly *not* zero, otherwise we'd get no energy from it
Can somebody explain to me where I'm missing the point?
Thanks
Apologies for asking what may be a very simple question, but in every textbook I've read, they say that the net flux through an area dA from an isotropic emitter is zero. But it also says that the sun is an isotropic emitter.
Now hold on, the net flux from the sun is clearly *not* zero, otherwise we'd get no energy from it
Can somebody explain to me where I'm missing the point?
Thanks