scholarly journals ELECTROMAGNETIC RADIATION IN EVEN-DIMENSIONAL SPACE–TIMES

2008 ◽  
Vol 23 (29) ◽  
pp. 4695-4708 ◽  
Author(s):  
B. P. KOSYAKOV
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Electromagnetic Radiation ◽  
Point Charge ◽  
Dimensional Space ◽  
Flat Space ◽  
Vector Potentials ◽  
Radiated Energy ◽  
Basic Concepts ◽  
Strength Formula

The basic concepts and mathematical constructions of the Maxwell–Lorentz electrodynamics in flat space–time of an arbitrary even dimension d = 2n are briefly reviewed. We show that the retarded field strength [Formula: see text] due to a point charge living in a 2n-dimensional world can be algebraically expressed in terms of the retarded vector potentials [Formula: see text] generated by this charge as if it were accommodated in 2m-dimensional worlds nearby, 2 ≤ m ≤ n+1. With this finding, the rate of radiated energy–momentum of the electromagnetic field takes a compact form.

MONITORING SYSTEM TO ENSURE THE ELECTROMAGNETIC SAFETY OF HOUSEHOLD OBJECTS

2020 ◽  
Author(s):  
Е.В. ТИТОВ
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Electric Field ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Personal Computer ◽  
Experimental Studies ◽  
Electromagnetic Environment ◽  
Stay Time ◽  
Computer Monitors

Предложен метод формирования картин опасности электромагнитных излучений в ограниченном пространстве с источниками электромагнитных полей по критерию допустимого времени пребывания людей. Представлены результаты экспериментальных исследований опасности электромагнитного поля от мониторов персональных компьютеров, оптических манипуляторов типа «мышь» и многофункциональных устройств типа «принтер-копир-сканер». Приведены компьютерные модели электромагнитной обстановки в виде картин распределения напряженности электрического поля на частоте 30 кГц, а также в виде картин опасности электромагнитных излучений по критерию допустимого времени. It is proposed the method of forming pictures of the danger of electromagnetic radiation in a limited space with sources of electromagnetic fields according to the criterion of the allowable stay time. The article shows the results of experimental studies of the electromagnetic field from personal computer monitors, optical mice, and multifunctional devices printer-copier-scanner. Computer models of the electromagnetic environment are presented in the form of pictures of the distribution of the electric field strength at a frequency of 30 kHz

ON THE RELATIVISTIC THEORY OF CHARGE

1993 ◽  
Vol 07 (06) ◽  
pp. 413-419
Author(s):  
Y. AKTAS ◽  
M. W. EVANS ◽  
F. FARAHI
Keyword(s):  
Electromagnetic Field ◽  
Experimental Observation ◽  
Linear Relation ◽  
Relativistic Theory ◽  
Qualitative Agreement ◽  
Point Charge ◽  
Reference Frames ◽  
Speed Of Light ◽  
Scalar Parameter ◽  
Vector Potentials

The concept of charge is developed relativistically by assuming that there is a linear relation between point charge (e) and point mass (m) of the type: [Formula: see text] where ζ is a scalar parameter which is unchanged in all reference frames. The theory shows that charge, in a relativistic development based on this hypothesis, depends in general on the velocity of the particle carrying the charge, and the latter vanishes at the speed of light. The hypothesis (1) also implies that charge depends on the scalar and vector potentials of the electromagnetic field. These conclusions are in qualitative agreement with experimental observation.

Čerenkov radiation in a magneto-ionic medium (with application to the generation of low-frequency electromagnetic radiation in the exosphere by the passage of charged corpuscular streams

1963 ◽  
Vol 255 (1063) ◽  
pp. 585-606 ◽  
Keyword(s):  
Electromagnetic Field ◽  
Electromagnetic Radiation ◽  
Frequency Band ◽  
Point Charge ◽  
Plane Waves ◽  
Low Frequency ◽  
Angular Spectrum ◽  
Cerenkov Radiation ◽  
Ionic Medium

The electromagnetic field of a uniformly moving point charge in a magneto-ionic medium is evaluated by representing the field due to the moving charge in an angular spectrum of plane waves. A brief discussion of the frequency ranges satisfying the Čerenkov coherence condition is given. It is shown that Čerenkov radiation in the exosphere produces low-frequency hiss. The spectral and polar distributions of radiation over the low-frequency band were computed numerically for plasma and gyro frequencies occurring in the exosphere and for particle speeds of the order of solar corpuscular cloud speeds. An interesting feature of the radiation is that the more slowly the particle moves the greater is the emitted radiation.

Electromagnetic Field Strength Levels Surrounding Electronic Article Surveillance (EAS) Systems

2000 ◽  
Vol 78 (1) ◽  
pp. 21-27 ◽  
Author(s):  
C. Harris ◽  
W. Boivin ◽  
S. Boyd ◽  
J. Coletta ◽  
L. Kerr ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Electromagnetic Field Strength

On Conformally Covariant Spinor Field Equations

1972 ◽  
Vol 50 (18) ◽  
pp. 2100-2104 ◽  
Author(s):  
Mark S. Drew
Keyword(s):  
Minkowski Space ◽  
Invariant Mass ◽  
Spinor Field ◽  
Dimensional Space ◽  
Flat Space ◽  
Field Equations ◽  
First Order ◽  
Conformally Invariant ◽  
Spinor Fields

Conformally covariant equations for free spinor fields are determined uniquely by carrying out a descent to Minkowski space from the most general first-order rotationally covariant spinor equations in a six-dimensional flat space. It is found that the introduction of the concept of the "conformally invariant mass" is not possible for spinor fields even if the fields are defined not only on the null hyperquadric but over the entire manifold of coordinates in six-dimensional space.

Electrodeless breakdown in elliptically polarized fields at 60 Hz

1983 ◽  
Vol 61 (9) ◽  
pp. 1284-1290
Author(s):  
D. E. Friedmann ◽  
F. L. Curzon ◽  
M. Feeley
Keyword(s):  
Field Strength ◽  
Linear Polarization ◽  
Breakdown Strength ◽  
Breakdown Threshold ◽  
Glass Bulb ◽  
Maximum Field Strength ◽  
High Fields ◽  
Strength Formula ◽  
Elliptically Polarized ◽  
Maximum Field

Theoretical and experimental results are presented on the frequency of electrodeless breakdown (fB) of a gas in a spherical glass bulb immersed in an elliptically polarized field of maximum field strength [Formula: see text] and frequency fA (~60 Hz). It is found that the breakdown threshold is independent of the ellipticity and that graphs fB versus [Formula: see text] are stepped at low fields and linear at high ones. At high fields, fB = fAl/e0 where l is the circumference of the phasor and e0 is the breakdown strength of the gas ([Formula: see text] and [Formula: see text] respectively for circular and linear polarization). The implications of the results for measuring environmental fields are given.

scholarly journals WITHOUT A CONFLICT MODEL OF ELECTRON

2019 ◽  
pp. 16-20
Author(s):  
Vasil Tchaban
Keyword(s):  
Elementary Particle ◽  
Black Hole ◽  
Electromagnetic Field ◽  
Charge Density ◽  
Point Charge ◽  
Quark Distribution ◽  
Electromagnetic Mass ◽  
White Hole ◽  
Universal Formula ◽  
Conflict Model

The model of electron is offered with quark distribution of charge density and ”white hole” (on similarity of ”black hole” in gravitation) in a center. Such structure abolishes the crisis of electromagnetic mass, calculated on universal formula and on the impulse of the electromagnetic field. A model in order to please a classic electrodynamics keeps monolithic nature of elementary particle, and in order to please a quantum allows the separate charged zones to interpret as separate quarks. Coming from harmony of spheres of the separate charged zones, a white hole can be interpreted as white (neutral) quark conditionally in addition to three coloured. As after the electric radius re = 1.185246·10−15 m of white hole the laws of electricity do not operate, then the crisis of point charge is removed at the same time too, because of must be: r ≥ re.

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