Mathematics – Logic
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apl....17...57c&link_type=abstract
Astrophysical Letters, vol. 17, no. 2, 1976, p. 57-59.
Mathematics
Logic
2
Electron Mass, Uranium 238, Variable Mass Systems, Astronomical Models, Cosmology, Nuclear Fission, Red Shift, Time Response
Scientific paper
Hoyle and Narlikar's (1971) conformally invariant theory of gravitation proposes that the mass of an atomic particle is a quadratic function of cosmic time. Thompson (1975) has suggested that the electron mass may evolve with time, but the masses of other particles remain constant. The present letter discusses two independent measurements of the spontaneous fission decay constant of U-238 which set an upper limit on any possible time dependence of the electron mass during the last two billion years. These measurements show that the value of the electron mass two billion years ago was the same as today to within 1.47 parts in one thousand. A comparison of optically determined radial velocities with those derived from 21-cm measurements for 27 galaxies is also noted, the results of which would exclude any possible time variation of the electron mass if this variation is the only source of noncosmological redshifts.
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