Effect of Atmospheric Pressure on the Frequency of a Tuning-fork


DUE to the necessity of obtaining accurate values of high frequencies in radio communication, the establishment of a frequency standard of high order of accuracy has already been undertaken in various countries. The usual method is a single frequency standard system. It naturally requires an ideal vibrator of extremely high order in constancy. A valve… (More)
DOI: 10.1038/124511a0


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