# Stefan's law for all solids?

Discussion in 'Physics & Math' started by neelakash, Nov 27, 2007.

1. ### neelakashRegistered Senior Member

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491
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?

3. ### James RJust this guy, you know?Staff Member

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What constants?

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

5. ### neelakashRegistered Senior Member

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491
Oh man, I am talking about emissivity that multiples to $\sigma$

7. ### James RJust this guy, you know?Staff Member

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

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9. ### neelakashRegistered Senior Member

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491
draqon nice copy paste from hyperphysics

10. ### draqonBannedBanned

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well duh just see properties of the image.