
Accession Number : AD0610070
Title : ENERGY MOMENTUM CONSERVATION AND SOME OF ITS CONSEQUENCES FOR THE CLASSICAL PARTICLE.
Descriptive Note : Physical sciences research papers,
Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
Personal Author(s) : Post,E. J.
Report Date : DEC 1964
Pagination or Media Count : 28
Abstract : Mechanical energy and momentum (em) has an equivalent counterpart in electromagnetic energy and momentum (em) and vice versa if conservation is assumed for the sum of these two fundamental manifestations of em. The classical particle concept is reconsidered in the spirit of Kwal's emphasis on an invariant relation between the em tensor and the em vector. The notion of a masscarrying particle is specified by introducing a concept of physical rigidity which permits a straightforward definition of states of rest and motion of particles and their associated fields. It then follows that an optional electromagnetic interpretation of restmass applies to every particlelike object which in a restframe is surrounded by an electrostatic or a magnetostatic field (for example, (+) and () pion, neutron and antineutron). The conclusion also holds for particles characterized by a combination of an electric monopole and a magnetic dipole (for example, positron and electron), provided some simple symmetry requirements are met. The electromagnetic option for a neutral particle without a magnetic moment but with a rest mass (for example, pion and K meson) is that of a (temporarily) trapped standing wave. (Author)
Descriptors : (*ELEMENTARY PARTICLES, MOMENTUM), TENSOR ANALYSIS, VECTOR ANALYSIS, ELECTROMAGNETIC RADIATION, QUANTUM THEORY, PIONS, NEUTRONS, ANTIPARTICLES, ELECTRONS, POSITRONS, K MESONS, ELECTRIC MOMENTS, MAGNETIC MOMENTS, INVARIANCE, NUMERICAL INTEGRATION
Distribution Statement : APPROVED FOR PUBLIC RELEASE