What Does P Represent in Intensity = P/Area?

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Maddie1609
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Hello!

I just started learning about Stefan-Boltzmann's law and I'm stuck on the word for P in Intensity = P/Area.

Also, does anyone have a quick and easy explanation for how Max Planck started quantum mechanics by saying energy is quantized and how the equation E = nhf says so?
 

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Maddie1609 said:
I just started learning about Stefan-Boltzmann's law and I'm stuck on the word for P in Intensity = P/Area.
How about Power!
 
Doc Al said:
How about Power!
Oh lord ha ha, thank you!
 

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