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Lecture 4 - Astro Pas Rochester

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Summary<br />

! Using hydrostatic equilibrium to estimate central<br />

pressures in stars<br />

! Using the equation of state to estimate the central<br />

temperature in stars.<br />

! Using a diffusive approximation and a mean free path<br />

to estimate the time it takes for photons to diffuse to the<br />

surface from the center of the Sun.<br />

<strong>Astro</strong>nomy 142 25

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