[N085101], Technical Note, Francis Jehl, Francis Robbins Upton, October 7th, 1879

Item

Abstract

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

Date

1879-10-07

Decade

1870-1879

Identifier

N085101

Folder Set

N085

Title

[N085101], Technical Note, Francis Jehl, Francis Robbins Upton, October 7th, 1879

Microfilm ID

35:833

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University