Chronology of Milestone Events in Particle Physics - DUNNINGTON 1939
Chronology of Milestone Events in Particle Physics

DUNNINGTON 1939

Dunnington, F.G.;
A Re-evaluation of the Atomic Constants
Phys. Rev. 55 (1939) 683;

Full Text
The experimental work on all significant determinations of the atomic constants e, m and h has been reexamined and the results recalculated with two changes:
a) all assumptions as to values of combinations of atomic constants have been eliminated so that the results given represent what the experiments actually yield and
b) a consistent set of auxiliary constants has been used throughout.
A Birge-Bond diagram will be given to present the results graphically and illustrate clearly the discrepancy. A least squares solution of these results has been made without using the Rydberg formula. The results are: eqnarray* e &= (4.8025 0.0007) x 10-10 e.s.u.,
m &= (9.1073 0.0024) x 10-28 g,
h &= (6.6133 0.0034) x 10-27 erg sec.,
e/m0 &= (1.7590 0.0004) x 107 e.m.u.,
h/e &= (1.3771 0.0007) x 10-17 e.s.u. eqnarray* As to where the discrepancy originates, this solution together with an analysis of each type of measurement as to the fundamental laws involved indicates that either:
the existing body of experimental results is substantially correct and the Rydberg formula is in error, or
the Rydberg formula is correct and all the measurements of h/e and the radiation constants are in error, the error being in some cases presumably experimental, and in other cases in the theory involved.
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Related references
See also
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