Which one of them is that what I am looking for? On this site is calculator too. It claims that result is 6.77561e+07 W/m2/sr. My site: 2.1447e+08 W/m2.
I don't know how to integrate. That isn't a homework for all. It's an extra exercise for me. I hope that you will help me with it.
I do calculations in Mathematica. I put that:
Integrate[((2*Pi*6.63*10^-34*(3*10^9)^2)/x^5)*(1/(E^(6.63*10^-34*3*10^9/x*1.38*10^-23*10000))-1)*1.256*10^-11...
Homework Statement
I need to calculate radiation power of ball in range 400nm-800nm.
T=10000K
d=1um.
Homework Equations
I think I need to use Planck equation and integrate that.
My equation in link: http://imgur.com/XbAUwJ8
The Attempt at a Solution
I look for equations and laws and try to do...
These:
the light is in the more dense medium and approaching the less dense medium.
the angle of incidence is greater than the so-called critical angle.