Acoustics

It has been my good fortune to be associated with the Board of Governors of the Institute of Physics most of the time from its organization and therefore I know the progress that has been made since the founding of the Institute. Many important things have happened during those twenty years, both in science and in our national and international affairs. Although we seem to make little or no progress in learning how to live together peaceably, these twenty years have been brilliant ones for scientific achievement.

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