# Thread: Stefan's law for all solids?

1. ## Stefan's law for all solids?

Do all incandescent solids obey the fourth power law of temperature?

I think they all obey $\ T^4$
But the constants are different for them.

Agreed?

2. What constants?

The Stefan-Boltmann law is the same for all incandescent bodies.

3. Oh man, I am talking about emissivity that multiples to $\sigma$

4. Yes. Different objects have different emissivities. If they didn't, there'd be no need to include that constant in the Stefan-Boltzmann law...

5. draqon nice copy paste from hyperphysics

6. Originally Posted by neelakash
draqon nice copy paste from hyperphysics
well duh just see properties of the image.

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