\magnification=\magstep1


$$
{\rm v_{esc} } \quad = \quad { \sqrt { {2 G M} \over {R} } }
$$

$$
{\rm v_{gas} } \quad = \quad 157 { \sqrt { {T} \over {w} } }  \quad {\rm meter/sec}
$$

$$
{\rm T} \quad \simeq \quad 279 { \sqrt { {1} \over {d_{\rm AU}} } }  \quad {\rm Kelvin }
$$



\bye
