Jefimenko received his B.A. degree at Lewis and Clark College in 1952 and his M. A. degree at the University of Oregon in 1954. He received his Ph.D. degree at the University of Oregon in 1956. Jefimenko worked for the development of the theory of electromagnetic retardation and relativity. In 1956, he was awarded the Sigma Xi Prize. In 1971 and 1973, he won awards in the AAPT Apparatus Competition. Jefimenko constructed and operated electrostatic generators run by atmospheric electricity. Jefimenko worked on the generalization of Newton's gravitational theory to time-dependent systems. In his opinion, there is no objective reason for abandoning Newton's force-fieldgravitational theory. He was trying to develop and expand Newton's theory, making it compatible with the principle of causality and making it applicable to time-dependent gravitational interactions. Jefimenko's expansion, or generalization, is based on the existence of the second gravitational force field, the "cogravitational, or Heaviside's field". This might also be called a gravimagnetic field. It represents a physical approach profoundly different from the time-space geometry approach of the Einstein general theory of relativity. Oliver Heaviside first predicted this field in the article A Gravitational and Electromagnetic Analogy.
Electromagnetic analogy of gravitational and cogravitational fields
Jefimenko suggests that electromagnetic equations can be converted to their gravitational-cogravitational equivalent by replacing electromagnetic symbols and constants with their corresponding gravitational-cogravitational symbols and constants, given in the table below.
Electricity and Magnetism: An Introduction to the Theory of Electric and Magnetic Fields, 2nd ed., Electret Scientific, Star City, 1989.
Scientific Graphics with Lotus 1-2-3: Curve Plotting, 3D Graphics, and Pictorial Compositions. Electret Scientific, Star City, 1987.
30 Music Programs for Timex Sinclair 2068. Electret Scientific, Star City, 1985.
Electrostatic motors; their history, types, and principles of operation. Star City , Electret Scientific Co. . LCCN 73180890
Electrostatic motors; their history, types, and principles of operation; NEW REVISED EDITION, edited by Thomas Valone. Integrity Research Institute, Beltsville, MD .
Book chapters
What is the Physical Nature of Electric and Magnetic Forces?, in: Has the Last Word Been Said on Classical Electrodynamics? -- New Horizons, A. E. Chubykalo, Ed., Rinton Press, Paramus, 2004.
Does special relativity prohibit superluminal velocities?, in: Instantaneous Action at a Distance in Modern Physics: "Pro" and "Contra, A. E. Chubykalo, Ed.,.
Papers
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Gravitational field of a point mass moving with uniform linear or circular velocity, Galilean Electrodynamics, March/April 1994, pp. 25–33.
Encyclopedia Article
Maxwell's Equations, Macmillan Encyclopedia of Physics, Macmillan, New York, 1996.
