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Andrew Magalich edited subsection_Gravitational_redshift_For_a__.tex
almost 8 years ago
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\subsection{Gravitational redshift}
For a lightray traveling along the radius, the interval looks like
$$
0 = - \left(1- \frac{2M}{r}\right) dt^2 + \left(1-\frac{2M}{r}\right)^{-1} dr^2
$$
$$
dt^2 = \frac{dr^2}{\left(1- \frac{2M}{r}\right)^2}
$$
