Talk:Oleg D. Jefimenko

Life
What about his life before coming to USA? Zhenyok 1 (talk) 22:40, 27 February 2010 (UTC)

Crackpot
Did he do anything else than write down a non-starter crackpot theory of gravity (non-starter meaning: at time of writing down already obsoleted by 80-100 year old experimental evidence). If he didn't do anything else he shouldn't have a wikipedia page. 95.112.73.251 (talk) 11:03, 9 May 2020 (UTC)


 * The main thing he is known for seems to be Jefimenko's equations. I'm not competent to judge the importance of those equations. But I've seen a free energy conspiracy theorist referencing Jefimenko's work, which is not good optics. -- intgr [talk] 22:07, 1 November 2020 (UTC)

Jefimenko's equations appear in standard textbooks such as Introduction to Electrodynamics by David J. Griffiths. They show how electromagnetic radiation is tied to the time derivatives of the charge and current densities -- an important feature of electrodynamics. Jefimenko was interested in electrostatic motors that run off of atmospheric electricity. Perhaps this is why some fringe group is citing him. Jefimenko was not a crackpot, though, and I would resist removing his wikipedia page. — Preceding unsigned comment added by SchmittM (talk • contribs) 17:16, 13 February 2024 (UTC)