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{{Infobox scientist
| name = Yuri N. Keilman
| image = Yuri N Keilman 867.jpg
| alt = Yuri N. Keilman
| birth_date = {{birth date|1932|04|15|mf=y}}
| death_date = {{death date|2024|08|20|mf=y}}
| residence = Valley City, ND, United States
| nationality = Russian / USA
| known_for = [[Classical Theoretical Physics]], [[Relativity]], [[Electrodynamics]]
}}

'''Yuri N. Keilman''' (April 15, 1932 – August 20, 2024) was a Russian-American theoretical physicist known for his work on [[Classical Theoretical Physics|classical theoretical physics]], [[Electrodynamics|classical electrodynamics]] and the theory of elementary particles. He proposed a nonsingular ("regular") formulation of classical electrodynamics intended to describe particles without the singularities of the conventional theory.

==Biography==

Keilman graduated in theoretical physics in Russia in 1966 and pursued theoretical physics independently. He later emigrated to the United States, settling in Oregon and subsequently in North Dakota. He lived in Valley City, North Dakota, and later in Fargo, North Dakota, where he died on August 20, 2024, at the age of 92.

==Scientific contributions==

Keilman worked chiefly on the foundations of classical electrodynamics (CED) and its application to the structure of elementary particles. In 1982 he reported a nonsingular particle solution within classical electrodynamics, which he intended as a replacement for the conventional singular (1/r) solution. He subsequently developed solutions that he associated with light particles.

His program, which he termed "extended" or "regular" classical electrodynamics, proposed that, in addition to the transverse electromagnetic waves that carry energy and momentum, there exist longitudinal ("dummy") waves that carry no energy or momentum but influence particles through boundary conditions. He applied these ideas to questions of mass, gravity, special relativity and the classical interpretation of quantum phenomena such as de Broglie waves and the Bohr atomic model. His paper "The Basic Principles of Classical Electrodynamics" appeared in ''Physics Essays'' (Vol. 16, pp. 390–397, 2003), and his work "In-Depth Development of Classical Electrodynamics" was published in ''Progress in Physics'' (2008). He was a prolific contributor to the ''General Science Journal'', publishing dozens of papers between 2002 and 2018.

Keilman's views were part of the dissident/alternative-physics tradition and were not accepted within mainstream physics.

'''Articles''' (<em>General Science Journal</em>):

Added Apr. 7, 2009: [http://www.wbabin.net/yuri/keilman27.pdf The Real Meaning of Special Relativity]<br />Added Oct. 18, 2008: [http://www.wbabin.net/yuri/keilman26.pdf Objective Formulation of Special Relativity]<br />Added Oct. 1, 2007: [http://www.wbabin.net/yuri/keilman25.pdf Once More on the Meaning of Special Relativity Theory ]<br />Added Sep. 24, 2007: [http://www.wbabin.net/yuri/keilman24.pdf In-Depth Analysis of Classical Electrodynamics (CED) ]<br />Added Dec. 28, 2006: [http://www.wbabin.net/yuri/keilman23.pdf The Nicola Tesla Connection ]<br />Added Oct. 10, 2006: [http://www.wbabin.net/yuri/keilman22.pdf On the Physical Meaning of the Energy-Momentum Tensor ]<br />Added Sep. 25, 2006: [http://www.wbabin.net/yuri/keilman21.pdf We Live in a World where Non-Conservation of Linear Momentum is a Common Phenomenon ]<br />Added Sep. 12, 2006: [http://www.wbabin.net/yuri/keilman20.pdf Difficult Statements ]<br />Added Sep. 2, 2006: [http://www.wbabin.net/yuri/keilman19.pdf Dummy Waves Are Responsible for Gravity ]<br />Added Aug. 24, 2006: [http://www.wbabin.net/yuri/keilman18.pdf Dummy Waves ]<br />Added Aug. 22, 2006: [http://www.wbabin.net/yuri/keilman17.pdf My Mistake: The Notion That There is No Electric Field Inside a Capacitor is Wrong ]<br />Added Jun. 11, 2006: [http://www.wbabin.net/yuri/keilman16.pdf Unfortunate Relativity ]<br />Updated Jan. 5, 2005: [http://www.wbabin.net/yuri/keilman14.pdf The Failure of Maxwell's Equations Inside a Capacitor [HTML]][http://www.wbabin.net/yuri/keilman14.pdf  - Version]<br />Added Dec. 6, 2005: [http://www.wbabin.net/yuri/keilman13.pdf Classical Interpretation of de Broglie's Waves ]<br />Added Dec. 6, 2005: [http://www.wbabin.net/yuri/keilman12.pdf The Lorentz Problem of 1890 Solved by Einstein in 1905 ]<br />Updated Feb. 2, 2005: [http://www.wbabin.net/yuri/keilman10.pdf The Basic Principles of Classical Electrodynamics (HTML) ][http://www.wbabin.net/yuri/keilman10.pdf - PDF Version]<br />Updated Feb. 2, 2005: [http://www.wbabin.net/yuri/keilman11.pdf Classical Approach to the Theory of Elementary Particles [HTML]][http://www.wbabin.net/yuri/keilman11.pdf  - PDF Version]<br />Added Sep. 23, 2004: [http://www.wbabin.net/yuri/keilman9.pdf The Concept of "Mass" in Extended Classical ElectroDynamics (ECED)]<br />Added Sep. 16, 2004: [http://www.wbabin.net/yuri/keilman8.pdf Mathematics that Every Physicist Should Know]<br />Added Sep. 13, 2004: [http://www.wbabin.net/yuri/keilman7.pdf Symmetry in Classical Physics]<br />Updated Sep. 13, 2004: [http://www.wbabin.net/yuri/keilman.pdf Classical Electrodynamics]<br />Updated Sep. 13, 2004:[http://www.wbabin.net/yuri/keilman5.pdf  Experiment to Test the Local Equivalence Principle]<br />Added May 24, 2004:[http://www.wbabin.net/yuri/keilman6.pdf  Special Relativity is a Classical Theory]<br />Added Dec. 4, 2002: [http://www.wbabin.net/yuri/keilman4.pdf Relativity is a Two-Faced Janus]<br />Added Jul, 14, 2002: [http://www.wbabin.net/yuri/keilman3.pdf Derivation of Special Relativity from Maxwell's Equations]

==Abstracts==

* 2011 - "[[Centron ? One of the Simplest Particles of Classical Electrodynamics (CED) ]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_6182.pdf Read in full])
* 2011 - "[[The Major Player in Special Relativity is the Metric Tensor]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_6136.pdf Read in full])
* 2010 - "[[Bohr Quantum Theory Yields the Relativistic Schroedinger Equation]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_5471.pdf Read in full])
* 2010 - "[[The Meaning of "Psi Function" of Quantum Theory]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_5469.pdf Read in full])
* 2009 - "[[The Real Meaning of Special Relativity]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_3469.pdf Read in full])
* 2009 - "[[Special Relativity Postulates]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_3784.pdf Read in full])
* 2008 - "[[In-Depth Development of Classical Electrodynamics]]" ([http://www.ptep-online.com/index_files/complete/PP-01-2008.pdf Read in full])
* 2002 - "[[Special Relativity Theory is a Twofacial Janus (Or: Does SRT live up to its name - Relativity)
]]" ([http://www.mrelativity.net/Papers/3/Keilman.htm Read in full])
* 2000 - "[[Illegal Particles]]" ([http://www.naturalphilosophy.org/pdf/abstracts/abstracts_3493.pdf Read in full])

==Media==

* 2009 - [http://www.worldsci.org/videos/dimdim/event_170_dimdim.flv Debate Einsteins Special Relativity Postulates True or False] (Video Lecture)

==External links==

* [https://www.gsjournal.net/Science-Journals-Papers/Author/172/Yuri,%20Keilman Papers by Yuri Keilman at the General Science Journal]
* [http://physicsessays.org/browse-journal-2/product/987-8-yuri-n-keilman-the-basic-principles-of-classical-electrodynamics.html "The Basic Principles of Classical Electrodynamics", Physics Essays 16 (2003)]

[[Category:Scientist|Keilman Yuri]]
[[Category:Worldwide List of Dissident Scientists]]