Recent Results of the e/h-measurement at PTB

The 1973 Least-Squares Adjustment of the Fundamental Constants

“…In comparing these adjustments to their counterparts in table 29.2 (Le., Nos. 16,17, and 18 with Nos. 1, 2, and 3) we see that RB has decreased, that the values of the adjusted constants have changed by relatively small amounts, and that their uncertainties have increased.…”

“…Furthermore, as these authors point out, using the . geochemical atomic weight as given in table 9.2 is a questionable assumption in view of the isotopic fractionation which may occur during the float-zone purification of the silicon crystal used in the interferometer experiment.The three values of N AA 3 discussed in this section are summarized in table17.1. E. R. COHEN AND B. N. TAYLOR 18.…”

Kritisch eingeschätzte und empfohlene Stoffdaten1): Die Fundamentalkonstanten

“…Q: [38], [45], [46], [47], [51]- [55], [73]- [75], [92], [118] I) Faraday-Konstante F: Eine genaue Messung der Faraday. Konstanten wurden 1960 von Craig [29] durchgefiihrt.…”