Sir:

Professor R. T. Birge of the University of California has kindly informed me that the value of 2me4/h3c given in my article on “Any Physics Tomorrow?” as being equal to 109,677.759 cm−1 is in error, and must be replaced by 109,737.303 cm−1. It will be noticed, however, that this change in the numerical value of the Rydberg constant does not change the main line of arguments presented in the article, and also does not influence the final conclusions.

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