IS Lamb Shift and the Rydberg Constant

The intervals of gross structure are mainly determined by the Rydberg constant, and the same transition frequencies should be used both for measurement of the Rydberg constant and for measurement of the IS Lamb shift. 

See more discussion of this method below in Subsect. 12.1.6. 

Schmidt-Kahler et al (1995) [31] 1 057 851(11) Self-consistent value 

Berkeland, Hinds, Boshier (1995) [32] 1 057 839 (11) Self-consistent value 

(1997) [34] 1 057 850(4) Self-consistent value 

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