Recent content by jjjtttggg

  1. J

    How Does a Flat Black Body Radiate Energy into a Hemisphere?

    Thanks Jambaugh! Fantastic answer! Thanks so much. A followup question if I may . . . Stephan law gives total energy radiated from unit area of black body. My image of this is a simple sphere of unit surface area radiating in all directions. But in my case, I'm working with a small...
  2. J

    How Does a Flat Black Body Radiate Energy into a Hemisphere?

    Im working on designing a non contact thermal instrument. Need to estimate how much current I'll get from the photodiode. First background: I'm working from Planck's law and Stephan's law. The temperature of my target will be between 1250 and 1750K. From Stephan's law I've worked out this...
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