[{WikipediaArticle oldid='220866366'}]

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!!!License Information of Images on page
||Image Description||Credit||Artist||License Name||File
| The Wikimedia Commons logo, SVG version.| Original created by Reidab ( PNG version ) SVG version was created by Grunt and cleaned up by 3247 . Re-creation with SVG geometry features by Pumbaa , using a proper partial circle and SVG geometry features. (Former versions used to be slightly warped.)| Reidab , Grunt , 3247 , Pumbaa| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Commons-logo.svg
| Einstein at the home of Leiden physics professor Paul Ehrenfest , June 1920. On his lap is Paul Ehrenfest, Jr.. People on the picture from left to right: Ehrenfest, Paul ; Paul, Jr. ('Pavlik') (1915–1939) Albert Einstein| http://www.museumboerhaave.nl/contact/pers2a.html http://www.museumboerhaave.nl/contact/persfotos_einstein/Einstein2.jpg| Photo by Paul Ehrenfest's (1880-1933) associate.| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Einstein2.jpg
| Paul Ehrenfest| Portraits from the Dibner Library of the History of Science and Technology (reworked)| Autor/-in unbekannt Unknown author| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Paul Ehrenfest.jpg
| SVG version of the Wikiquote logo.| Eigenes Werk| Rei-artur| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Wikiquote-logo.svg
| Wikisource logo, no text variant| By Rei-artur pt en Rei-artur blog| Nicholas Moreau| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Wikisource-logo.svg
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