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 (e-m) has an equivalent counterpart in electromagnetic energy and momentum (e-m) and vice versa if conservation is assumed for the sum of these two fundamental manifestations of e-m. The classical particle concept is reconsidered in the spirit of Kwal's emphasis on an invariant relation between the e-m tensor and the e-m vector. The notion of a mass-carrying particle is specified by introducing a concept of physical rigidity which permits a straight-forward definition of states of rest and motion of particles and their associated fields. It then follows that an optional electromagnetic interpretation of rest-mass applies to every particle-like object which in a rest-frame is surrounded by an electrostatic or a magnetostatic field (for example, (+) and (-) pion, neutron and anti-neutron). 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