Oleg D. Jefimenko
Encyclopedia
Oleg Dmitrovich Jefimenko (October 14, 1922, Kharkiv
, Ukraine
- May 14, 2009, Morgantown
, West Virginia
, USA) - physicist
and Professor Emeritus at West Virginia University
.
at Lewis and Clark College (1952). He received his M. A.
at the University of Oregon
(1954). He received his Ph.D.
at the University of Oregon
(1956). Jefimenko has 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 has constructed and operated electrostatic generators run by atmospheric electricity
.
Jefimenko has worked on the generalization of Newton's gravitational theory to time-dependent system
s. In his opinion, there is no objective reason for abandoning Newton's force-field
gravitational theory (in favor of a metric gravitational 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 is 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" (1893).
Kharkiv
Kharkiv or Kharkov is the second-largest city in Ukraine.The city was founded in 1654 and was a major centre of Ukrainian culture in the Russian Empire. Kharkiv became the first city in Ukraine where the Ukrainian Soviet Socialist Republic was proclaimed in December 1917 and Soviet government was...
, Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...
- May 14, 2009, Morgantown
Morgantown, West Virginia
Morgantown is a city in Monongalia County, West Virginia. It is the county seat of Monongalia County. Placed along the banks of the Monongahela River, Morgantown is the largest city in North-Central West Virginia, and the base of the Morgantown metropolitan area...
, West Virginia
West Virginia
West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...
, USA) - physicist
Physicist
A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...
and Professor Emeritus at West Virginia University
West Virginia University
West Virginia University is a public research university in Morgantown, West Virginia, USA. Other campuses include: West Virginia University at Parkersburg in Parkersburg; West Virginia University Institute of Technology in Montgomery; Potomac State College of West Virginia University in Keyser;...
.
Biography
Jefimenko received his B.A.Bachelor of Arts
A Bachelor of Arts , from the Latin artium baccalaureus, is a bachelor's degree awarded for an undergraduate course or program in either the liberal arts, the sciences, or both...
at Lewis and Clark College (1952). He received his M. A.
Master of Arts (postgraduate)
A Master of Arts from the Latin Magister Artium, is a type of Master's degree awarded by universities in many countries. The M.A. is usually contrasted with the M.S. or M.Sc. degrees...
at the University of Oregon
University of Oregon
-Colleges and schools:The University of Oregon is organized into eight schools and colleges—six professional schools and colleges, an Arts and Sciences College and an Honors College.- School of Architecture and Allied Arts :...
(1954). He received his Ph.D.
Doctor of Philosophy
Doctor of Philosophy, abbreviated as Ph.D., PhD, D.Phil., or DPhil , in English-speaking countries, is a postgraduate academic degree awarded by universities...
at the University of Oregon
University of Oregon
-Colleges and schools:The University of Oregon is organized into eight schools and colleges—six professional schools and colleges, an Arts and Sciences College and an Honors College.- School of Architecture and Allied Arts :...
(1956). Jefimenko has 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
American Association of Physics Teachers
The American Association of Physics Teachers was founded in 1930 for the purpose of "dissemination of knowledge of physics, particularly by way of teaching." There are more than 10,000 members that reside in over 30 countries. AAPT publications include two peer-reviewed journals, the American...
Apparatus Competition. Jefimenko has constructed and operated electrostatic generators run by atmospheric electricity
Atmospheric electricity
Atmospheric electricity is the regular diurnal variations of the Earth's atmospheric electromagnetic network . The Earth's surface, the ionosphere, and the atmosphere is known as the global atmospheric electrical circuit...
.
Jefimenko has worked on the generalization of Newton's gravitational theory to time-dependent system
Time-dependent density functional theory
Time-dependent density functional theory is a quantum mechanical theory used in physics and chemistry to investigate the properties and dynamics of many-body systems in the presence of time-dependent potentials, such as electric or magnetic fields...
s. In his opinion, there is no objective reason for abandoning Newton's force-field
Field (physics)
In physics, a field is a physical quantity associated with each point of spacetime. A field can be classified as a scalar field, a vector field, a spinor field, or a tensor field according to whether the value of the field at each point is a scalar, a vector, a spinor or, more generally, a tensor,...
gravitational theory (in favor of a metric gravitational theory). He was trying to develop and expand Newton's theory, making it compatible with the principle of causality
Causality (physics)
Causality is the relationship between causes and effects. It is considered to be fundamental to all natural science, especially physics. Causality is also a topic studied from the perspectives of philosophy and statistics....
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 is might also be called a gravimagnetic field
Gravitomagnetism
Gravitomagnetism , refers to a set of formal analogies between Maxwell's field equations and an approximation, valid under certain conditions, to the Einstein field equations for general relativity. The most common version of GEM is valid only far from isolated sources, and for slowly moving test...
. It represents a physical approach profoundly different from the time-space geometry approach of the Einstein general theory of relativity. Oliver Heaviside
Oliver Heaviside
Oliver Heaviside was a self-taught English electrical engineer, mathematician, and physicist who adapted complex numbers to the study of electrical circuits, invented mathematical techniques to the solution of differential equations , reformulated Maxwell's field equations in terms of electric and...
first predicted this field in the article "A Gravitational and Electromagnetic Analogy" (1893).
Books
- "Gravitation and Cogravitation: Developing Newton's Theory of Gravitation to its Physical and Mathematical Conclusion", Electret Scientific Company, 2006.
- "Electromagnetic Retardation and Theory of Relativity: New Chapters in the Classical Theory of Fields", 2nd ed., Electret Scientific, Star City, 2004.
- "Causality, Electromagnetic Induction, and Gravitation: A Different Approach to the Theory of Electromagnetic and Gravitational Fields", 2nd ed., Electret Scientific, Star City, 2000.
- "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 [W. Va.], Electret Scientific Co. [1973]. LCCN 73180890
- "Electrostatic motors; their history, types, and principles of operation; NEW REVISED EDITION, edited by Thomas Valone". Integrity Research Institute, Beltsville, MD [2011].
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., (Nova Science, New York, 1999).
Papers
- "A neglected topic in relativistic electrodynamics: transformation of electromagnetic integrals". arxiv.org, 2005.
- "Presenting electromagnetic theory in accordance with the principle of causality", Eur. J. Phys. 25 287-296, 2004. doi:10.1088/0143-0807/25/2/015
- "Causality, the Coulomb field, and Newton's law of gravitation" (Comment), American Journal of Physics, Volume 70, Issue 9, p. 964, September 2002.
- "The Trouton-Noble paradox," J. Phys. A. 32, 3755–3762, 1999.
- "On Maxwell's displacement current," Eur. J. Phys. 19, 469-470, 1998.
- "Correct use of Lorentz-Einstein transformation equations for electromagnetic fields", European Journal of Physics 18, 444-447, 1997.
- "Retardation and relativity: Derivation of Lorentz-Einstein transformations from retarded integrals for electric and magnetic fields", American Journal of Physics 63 (3), 267-72.
- "Retardation and relativity: The ease of a moving line charge", American Journal of Physics, 63 (5), 454-9.
- "Direct calculation of the electric and magnetic fields of an electric point charge movingwith constant velocity," Am.J.Phys. 62, 79-84, 1994.
- "Solutions of Maxwell's equations for electric and magnetic fields in arbitrary media," Am. J. Phys. 60, 899-902 1992.
- "Electrets," (with D. K. Walker) Phys. Teach. 18, 651-659, 1980.
- "How can An Electroscope be Charged This Way?", TPT 56, 1979.
- "Water Stream 'Loop-the-Loop", AJP 42, 103-105, 1974.
- "Franklin electric motor," Am. J. Phys. 39, 1139–1141, 1971.
- "Operation of electric motors from atmospheric electric field," Am. J. Phys. 39, 776-779, 1971.
- "Demonstration of the electric fields of current-carrying conductors," Am. J. Phys. 30, 19-21, 1962.
- "Effect of the earth's magnetic field on the motion of an artificial satellite," Am. J. Phys. 27, 344-348, 1959.
Encyclopedia Article
- "'Maxwell's Equations'", Macmillan Encyclopedia of Physics, Macmillan, New York, 1996.
See also
- Jefimenko's equationsJefimenko's equationsIn electromagnetism, Jefimenko's equations describe the behavior of the electric and magnetic fields in terms of the charge and current distributions at retarded times....
- ElectretElectretElectret is a dielectric material that has a quasi-permanent electric charge or dipole polarisation. An electret generates internal and external electric fields, and is the electrostatic equivalent of a permanent magnet. Oliver Heaviside coined this term in 1885...
- Electrostatic generatorElectrostatic generatorAn electrostatic generator, or electrostatic machine, is a mechanical device that produces static electricity, or electricity at high voltage and low continuous current...
- Sky voltageSky voltageSky voltage refers to an electrostatic voltage gradient that is present in the free air of the atmosphere, and which can have a different voltage potential relative to the surface of the planet. The gradient varies with atmospheric humidity, dropping lower on days with high humidity, and higher in...
External links
- Oleg D. Jefimenko. Dept of physics.