View source for Stefan-Boltzmann law

<!--
s0875801.png
$#A+1 = 4 n = 0
$#C+1 = 4 : ~/encyclopedia/old_files/data/S087/S.0807580 Stefan\ANDBoltzmann law
Automatically converted into TeX, above some diagnostics.
Please remove this comment and the {{TEX|auto}} line below,
if TeX found to be correct.
-->

{{TEX|auto}}
{{TEX|done}}

The total emission capacity  $  u $
of an absolutely-black body is proportional to the fourth power of its absolute temperature  $  T $:

$$ 
u  =  \sigma T  ^ {4} ,
$$

where  $  \sigma = ( 5.67032 \pm  0.00071) \cdot 10  ^ {-1} Bt/m  ^ {2} \cdot K  ^ {4} $(
the Stefan–Boltzmann constant). This law was obtained empirically from analysis of experimental data by J. Stefan (1879), and was proposed in thermodynamic terms by L. Boltzmann (1884).

====References====
<table>
<TR><TD valign="top">[a1]</TD> <TD valign="top">  M. Born,   "Atomic physics" , Blackie &amp; Son  (1958)</TD></TR>
</table>