Julius Elster

<h2 id="biography">Biography</h2>
<p>Elster and <a href="/facts/Hans_Friedrich_Geitel/J5NeB5yC">Hans Friedrich Geitel</a>, the son of a <a href="/facts/Forester/6KnXGVIo">Forstmeister</a> who had moved to <a href="/facts/Bad_Blankenburg/QQgrVoEg">Blankenburg</a> with his family in 1861, grew up in the same neighborhood and attended school and high school together. The personal friendship was deepened by the shared interest in the <a href="/facts/Natural_science/8hg81Q2p">natural sciences</a> during their years at university in <a href="/facts/Heidelberg/jfbzRTo0">Heidelberg</a> and <a href="/facts/Berlin/pMTIRNXK">Berlin</a>. After they received their <a href="/facts/Teaching_certification/cYaFY2dQ">teaching certification</a> in <a href="/facts/Braunschweig/qv0TQYzz">Brunswick</a>, they went their separate ways for a short time. In 1881 they were working together at the Herzogliche Große Schule (translation: Ducal Great School) in <a href="/facts/Wolfenb%C3%BCttel/az9DJJXd">Wolfenbüttel</a> and used their leisure for <a href="/facts/Experimental_research/esltM54f">experimental research</a>. There Karl Bergwitz (1875–1958) was among their students.
</p><p>Elster was awarded an <a href="/facts/Honorary_doctorate/yVVgQ6Wt">honorary doctorate</a> (1915) along with Geitel at the <a href="/facts/Braunschweig_University_of_Technology/hgVoUTF9">Braunschweig University of Technology</a>. In 1919, he was diagnosed with <a href="/facts/Diabetes_mellitus/2xeHXbsI">diabetes mellitus</a>. In April 1920, the Privy Councilor Julius Elster died in Bad Harzburg during a spa stay.
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<h2 id="publications">Publications</h2>
<p>Together with his friend <a href="/facts/Hans_Friedrich_Geitel/J5NeB5yC">Hans Geitel</a>, he has well over 100 publications on <a href="/facts/Atmospheric_electricity/15aNFMpX">atmospheric electricity</a>, the intensity of the <a href="/facts/Starlight/nXTYlHSz">starlight</a>, ihe problems of <a href="/facts/Ionizing_radiation/vw0d9GaT">ionizing radiation</a> (example: "<i>On the radioactivity of the earth substrate and its possible relationship to the geothermal</i>") and other important areas of research a valuable contribution paid to the development of physics. Together with Geitel, Julius Elster invented a modern <a href="/facts/Photoelectric_cell/3L814UCC">photoelectric cell</a>.<a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a>
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Literature
<ul><li>Rudolf G. A. Fricke: J. Elster & H. Geitel. Jugendfreunde, Gymnasiallehrer, Wissenschaftler aus Passion. Döring Druck, Braunschweig, 1992, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 3-925268-12-X .</li>
<li>Rudolf E. Ottmer:  Elster, Julius. In: <a href="/facts/Neue_Deutsche_Biographie/k1FTzxqK">Neue Deutsche Biographie</a> (NDB). Volume 4, Duncker & Humblot, Berlin, 1959, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 3-428-00185-0, pp. 468 f.</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>"Julius (Johann Phillipp Ludwig) Elster: 1854 - 1920". Archived from the original on March 8, 2011. Retrieved 2016-10-15.{{cite web}}:  CS1 maint: bot: original URL status unknown (link) <a href="https://web.archive.org/web/20110308055542/http://www.acmi.net.au/AIC/ELSTER_BIO.html" target="_blank">https://web.archive.org/web/20110308055542/http://www.acmi.net.au/AIC/ELSTER_BIO.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
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Julius Elster open-in-new

Julius Elster