TABLE I: Recommended values for Planck’s constant, h; the ratio h/e; electron rest mass, m; and the Rydberg constant, R∞
Date |
h |
h/e |
m |
R∞ |
|
1939 |
6.6214 |
1.3793 |
9.1028 |
109737.42 |
130 |
1941 |
6.6242 |
1.37933 |
9.1066 |
109737.303 |
131 |
1947 |
6.6237 |
1.37926 |
9.1055 |
109737.300 |
132 |
1950 |
6.62363 |
1.37930 |
9.1071 |
109737.323 |
133 |
1952 |
6.6252 |
1.37943 |
9.1085 |
109737.309 |
134 |
1955 |
6.62517 |
1.37942 |
9.1083 |
109737.309 |
135 |
1963 |
6.62559 |
1.379474 |
9.10908 |
109737.310 |
136 |
1965 |
6.62592 |
1.379500 |
9.10934 |
109737.310 |
137 |
1969 |
6.626196 |
1.3795234 |
9.109558 |
109737.307 |
138 |
1973 |
6.626227 |
1.3795017 |
9.109560 |
109737.3177 |
139 |
1986 |
6.6260755 |
1.37951075 |
9.1093897 |
109737.3534 |
140 |
1998 |
6.6260687 |
1.37951011 |
9.10938188 |
109737.31568549 |
141 |
2002 |
6.6260693 |
1.37951016 |
9.1093826 |
109737.31568525 |
142 |
TABLE II: Birge’s recommended values of the velocity of light, c [57, 143]
Author |
Method |
Date |
Value of c ( x 105 km/s) |
revised by |
| Cornu-Helmert | Toothed Wheel | 1874.8 | 2.99990 | Birge |
| Michelson | Rotating Mirror | 1879.5 | 2.99910 | Birge |
| Newcomb | Rotating Mirror | 1882.7 | 2.99860 | Birge |
| Michelson | Rotating Mirror | 1882.8 | 2.99853 | Birge |
| Perrotin | Toothed Wheel | 1902.4 | 2.99901 | Birge |
| Rosa & Dorsey | Electrical Units | 1906.0 | 2.99803 | Froome & Essen |
| Mercier | Waves on Wires | 1923.0 | 2.99795 | Froome & Essen |
| Michelson | Polygonal Mirror | 1926.5 | 2.99798 | Birge |
| Mittelstaedt | Kerr Cell | 1928.0 | 2.99786 | Birge |
| Pease & Pearson | Polygonal Mirror | 1932.5 | 2.99774 | Birge |
| Anderson | Kerr Cell | 1936.8 | 2.99771 | Birge |
| Huttel | Kerr Cell | 1937.0 | 2.99771 | Birge |
| Anderson | Kerr Cell | 1940.0 | 2.99776 | Birge |
Go to: first page, section 1, 2, 3, 4, 5, 6, 7 or appendix 1, 2, 3, 4, 5, 6, 7, 8, or figures 1-7, or figure 8 or reference page.