๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Minutes of the stated meeting of the Franklin Institute Wednesday March 19, 1947


Publisher
Elsevier Science
Year
1947
Tongue
English
Weight
62 KB
Volume
243
Category
Article
ISSN
0016-0032

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๐Ÿ“œ SIMILAR VOLUMES


Stated meeting of The Franklin Institute
๐Ÿ“‚ Article ๐Ÿ“… 1969 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 159 KB

While developing and manufacturing large and high-powered vacuum tubes, the staff of Varian Associates, between 1956 and 1960, recognized the advantages of a new pumping scheme for obtaining and maintaining high vacuum. This pump, called the sputter-ion pump, makes use of the chemical reaction and g