Talk:Oleg D. Jefimenko

Oregon Low‑importance

	Oregon portal This article is within the scope of WikiProject Oregon, a collaborative effort to improve the coverage of the U.S. state of Oregon 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.OregonWikipedia:WikiProject OregonTemplate:WikiProject OregonOregon articles
Low	This article has been rated as Low-importance on the project's importance scale.
The current collaborations of the month are Women's History Month: Create or improve articles for women listed at Oregon Women of Achievement (modern) or Women of the West, Oregon chapter (historical).

Physics: Biographies Mid‑importance

	Physics portal 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
Mid	This article has been rated as Mid-importance on the project's importance scale.
	This article is supported by Biographies Taskforce.

Biography: Science and Academia

	Biography portal 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.

Life[edit]

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

Crackpot[edit]

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)[reply]

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)[reply]

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)[reply]