Society of Glass Technology · [Sheffield] · leaf 551
e capillary was machine drawn, and the author preferred thisfor uniformity of bore to the hand-made variety, quoting evidencein favour. Three corrections were described for (1) the fact that in a smalltube surrounded by a larger the capillary rise in the smaller dueto interfacial tension is greater… … 217. An Automatic High Vacuum Pump with a CollectingDevice for the Exhausted Gas. A. Beutell and P. Oberhoffer(Chem. Zeit., 1919, 43, 705).—The device is similar to one describedby Beutell in 1910. Very little mercury is used, and this doesnot come into contact with any rubber tube. A further…
Glass
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