Consider a photon produced in the center of the sun. (A) Howlong this
Would it take photon to cross the sun and reach the surface ifthere was no absorption? (B)
Suppose the photon is continually absorbed and reissued so that itspath to
surface can be considered as a random walk process. Assuming thatreissues
occur instantaneously after each absorption, estimate the timeneeded for the photon to reach the
surface.
