Einstein, Albert. 'Theorie der Opaleszens von homogenen Fluessigkeiten und Fluessigkeitsgemischen in der Naehe des kritischen Zustandes'. Annalen der Physik, 33 (1910)
<img src="http://foxridge.mpiwg-berlin.mpg.de/permanent/einstein/annalen/Einst_Theor_de_1910/fulltext/img/Einst_Theor_de_191043x.png" alt="e-@ G-= curl H , div H = 0, c @ t " class="par-math-display"/>
</center>
<p class="nopar"/>
<center class="math-display">
<img src="http://foxridge.mpiwg-berlin.mpg.de/permanent/einstein/annalen/Einst_Theor_de_1910/fulltext/img/Einst_Theor_de_191044x.png" alt="1-@ H- c @ t = - curlG, div (eG) = 0, " class="math-display"/>
</center>
<p class="nopar"/>
<p class="noindent">Hierin bedeutet
<span class="cmmi-12">G </span>
die elektrische,
<span class="cmmi-12">H </span>
die magnetische Feld-
<br/>
stärke,
<span class="cmmi-12">c </span>
die Vakuum-Lichtgeschwindigkeit. Durch Eliminieren
<br/>
von
<span class="cmmi-12">H </span>
erhält man </p>
<table width="100%" class="equation">
<tr>
<td>
<a id="x1-12r9"/>
<center class="math-display">
<img src="http://foxridge.mpiwg-berlin.mpg.de/permanent/einstein/annalen/Einst_Theor_de_1910/fulltext/img/Einst_Theor_de_191045x.png" alt="-e @2G-- c2 @ t2 = D G - grad divG , " class="math-display"/>
</center>
</td>
<td width="5%">(9)</td>
</tr>
</table>
<p class="nopar"/>
<table width="100%" class="equation">
<tr>
<td>
<a id="x1-13r10"/>
<center class="math-display">
<img src="http://foxridge.mpiwg-berlin.mpg.de/permanent/einstein/annalen/Einst_Theor_de_1910/fulltext/img/Einst_Theor_de_191046x.png" alt="div (e G) = 0 " class="math-display"/>
<img src="http://foxridge.mpiwg-berlin.mpg.de/permanent/einstein/annalen/Einst_Theor_de_1910/fulltext/img/Einst_Theor_de_191048x.png" alt="e @2e 1 @2G -02 --2-- D e = - -2 t---20-- grad dive , c @ t c @ t " class="math-display"/>