Black body Definition and 155 Threads

  1. S

    Calculating the Power and Impact of Black Body Radiation from the Sun

    My problem is that I have the numbers...but I don't have a formula. "The sun's temp. is about 6000 K, it's radius 700000 km. How much power is it radiating? If there is no dissipation between here and the sun, how much of this hits the earth?" Is this the P = c/4*U thing?
  2. P

    Need help understanding black body radiation

    Hello, New to this message board (and very happy to have found it). I am reading a book on cosmology by Steven Weinberg... I am having a terrible time understanding what exactly black body radiation is. Could someone please describe it in the most accesible terms? Also, if you would please...
    • p.falk
    • Thread
    • Black body Black body radiation Body Radiation
    • Replies: 4
    • Forum: Thermodynamics
  3. O

    Black Body Radiation: Classical Mechanics Can't Explain It

    why can't classcial mechanic explain black body radiation?
  4. R

    Black Body Equations (more of a math prob)

    Hi, In one of my textbooks, I'm given these two equivalent equations for energy flux radiated from a black body, one dependent on frequency, the other on wavelength: I(\lambda)d\lambda = \frac {2c^2h}{\lambda^5} \frac {1}{e^{(hc/KT\lambda)}-1}d\lambda and I(\nu)d\nu = \frac...
  5. V

    Exploring the Similarities and Differences between Black Holes and Black Bodies

    What are the similarities and differences between a black hole and a black body?