I. Surroundings Irradiation When does the special equation $G=T_{\text{s}\text{u}\text{r}}^4$

apply?

$$ You are in a large room with walls at temperature $77$ F$.$ Find the rate

$($in $\frac{W}{m^2})$ that EM waves emitted by the walls are incident upon your

skin. $(($:$447\frac{W}{m^2}\}.$ Find the rate $($in $\frac{W}{m^2})$ that your skin absorbs EM

waves from the walls; use $=0\mathrm{.}95$ for skin absorptivity$.($About

$424\mathrm{.}8\frac{W}{m^2}).$

$$ Repeat the above calculations if you are in a room with walls at $95F.$

$.$ And $($:$G_{\frac{?}{abs}}=485\frac{W}{m^2}\}$