Unformatted text preview: equency νmax at which the Planck
function Bν attains its maximum value is given by the expression
kT
ν max ≈ 2.82
. (Warning: νmax ≠ c/λmax) HINT: You will need to show
h
that when the Planck function Bν attains its maximum value, we have
3( e x − 1) = xe x where x is some combination of variables including
frequency. The only way to solve for the value of x (other than the trivial
x=0) is numerically [Wolfram Alpha or Maple are able to do it].
b. What is the value of νmax for the surface of the Sun (Te = 5777 K)?
c. Find the wavelength of a light wave having frequency νmax. In what region
of the electromagnetic spectrum is this wavelength found? – Page 3 of 3 –...
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This document was uploaded on 03/04/2014 for the course ASTROPHYS 362 at Minnesota State University Moorhead .
 Spring '14
 Dr.JuanCabanela

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