Published equation contexts

$\phi_{,zz}\,h^2 = \sqrt2\,\sigma_y$

Why this formula appears here

σ y . Setting signal equal to noise, $\phi_{,zz}$ \, $h^2$ = $\sqrt2$ \, $\sigma_y$ , gives

\phi_{,zz}

phi_,zz is part of the quantity the equation computes from the expression on the right.

h^2

The square of h: multiply h by itself.

\sigma_y

sigm $a_y$ is an input to the expression that computes the quantity on the left.

Read it with the definitions, units, and assumptions supplied by the article.

A symbol can carry a different meaning in another article. Each occurrence keeps its own guide and term definitions.

\phi_{,zz}\,h^2 = \sqrt2\,\sigma_y

Equation 139 · Evolutionary Physics

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

σ y . Setting signal equal to noise, $\phi_{,zz}$ \, $h^2$ = $\sqrt2$ \, $\sigma_y$ , gives