1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: I = P/A what is P?

  1. Sep 23, 2014 #1

    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?
  2. jcsd
  3. Sep 23, 2014 #2

    Doc Al

    User Avatar

    Staff: Mentor

    How about Power!
  4. Sep 23, 2014 #3
    Oh lord ha ha, thank you!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted