Abstract
A UNIT of pressure in terms of the height of the column of a liquid manometer is essential, since such an instrument, including the compression manometer (McLeod gauge), is indispensable in the measurement of low pressures. Even in the recent methods1 developed for measuring pump speeds and calibrating vacuum gauges, in which the only magnitude needed to be determined accurately is a rate of gas flow, manometers are required.
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References
Florescu, N. A., Sixth Nat. Symp. on Vac. Technol., Trans., 1959, Philadelphia (to be published).
Dayton, B. B., Vacuum Symposium, Trans., 132 (1954).
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FLORESCU, N. Standard Unit of Pressure in Vacuum Physics. Nature 188, 303 (1960). https://doi.org/10.1038/188303a0
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DOI: https://doi.org/10.1038/188303a0
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