\magnification = \magstep1

$$
\theta \quad = \quad {{\lambda}\over{D}} \quad \quad {\rm radians }
$$

$$
\theta \quad = \quad 206254 \ \left( {{\lambda}\over{D}} \right) \quad \quad {\rm arcseconds }
$$

$$
\lambda_{\rm peak} \quad \simeq \quad {{0.003 \ {\rm meter}}\over
                     {T\thinspace(\rm K)}}
$$


\bye
