This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Biography: Science and Academia This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography articles This article is supported by the science and academia work group (assessed as Mid-importance). Physics: Biographies Low‑importance This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics articles Low This article has been rated as Low-importance on the project's importance scale. This article is supported by Biographies Taskforce.

Where exactly is it written or said that Cohn didn't believe in the existence of the ether? I can't believe that he said so before Einstein... —Preceding unsigned comment added by 77.3.114.79 ( talk) 20:23, 13 July 2008 (UTC) reply

Regarding Cohn's rejection of the ether see the sources in the article (Miller, Darrigol, Janssen/Stachel). The relevant paper of Cohn is "Über die Gleichungen des elektromagnetischen Feldes für bewegte Körper" (1901). On p. 75 he wrote that one can define a vacuum, but not an ether. On p. 99 he identified the "ether" with the fixed stars. So he abandoned the classical, light carrying ether and called the ether a "metaphorical term".. -- D.H ( talk) 08:48, 14 July 2008 (UTC) reply

The only portrait of Emil Cohn (1884) I found is at the Bibliothèque nationale et universitaire (Strasbourg). Their Reproduction and printing page mentions a fee for publishing that photograph on the Internet, and a mention, which probably break Wikipedia's licensing terms. Can't Wikipedia get some kind of agreement with such kind of institutions? ale ( talk) 11:49, 14 January 2013 (UTC) reply

I think it should be mentioned that there are many namefellows "Emil Cohn", insofar more as this Emil G. Cohn is the only one mentioned on the Cohn disambiguation page. See for example the German page. — MFH: Talk 16:36, 27 June 2024 (UTC) reply