Abstract
IN recent years the advance of physics, especially atomic physics, has required vacua of an ever-increasing perfectness; to this end a series of extremely ingenious methods and pieces of apparatus have been designed, most of which have only been developed after the fundamental principles underlying each of them were fully mastered. At the same time manufacturers have availed themselves of these improved methods, and it is now common practice that methods of exhaust of the most recent type are employed in the production of commercial articles which require to be exhausted to the very highest degree. In order to be able to measure such high vacua, gauges capable of such precise measurements have been developed, and it is, of course, only by advancing such means that the process of exhaust can be improved.
The Production and Measurement of Low Pressures.
By Dr. F. H. Newman. Pp. 192. (London: Ernest Benn, Ltd., 1925.) 16s. net.
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LE R., R. The Production and Measurement of Low Pressures . Nature 116, 352 (1925). https://doi.org/10.1038/116352a0
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DOI: https://doi.org/10.1038/116352a0