[N085101], Technical Note, Francis Jehl, Francis Robbins Upton, October 7th, 1879
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Title
[N085101], Technical Note, Francis Jehl, Francis Robbins Upton, October 7th, 1879
Editor's Notes
this is discussion of Pump No. 4 but undated; fr. 835 iron spirals in vacuum; fr. 837 Mr. Eidson proposes measuring the amount of air given off from a spiral by means of McCleod guage. The exaustion should be once made and the pump stopped, then if the capacity of the guage and the pump be known the air given off may be calculated"; fr. 838 Spirals covered with lime; fr. 841 spiral covered with zinc; fr. 842 spirals covered with one of titanic oxide and another of zinc; fr. 844 includes photometer tests; fr. 845 MacCleod gauge
Mentioned
Date
1879-10-07
Type
Folder/Volume ID
N085-F
Microfilm ID
35:833
Document ID
N085101
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University