Concept explainers
The Eddington approximation leads to expression for the mean intensity, radiative flux and
Answer to Problem 9.17P
The Eddington approximation leads to expression for the mean intensity is
Explanation of Solution
Write the expression for average value of intensity.
Here,
Write the expression for specific radiative flux.
Write the expression for radiation pressure.
Conclusion:
Substitute
Substitute
Consider the limits
Solve further as,
Substitute
Consider the limits
Solve further as,
Substitute
Consider the limits
Substitute
Thus, the Eddington approximation leads to expression for the mean intensity is
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Chapter 9 Solutions
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