[N085129], Technical Note, Francis Robbins Upton, October 8th, 1879

Item

Abstract

At this date the trouble is to get an insulation for the platinum wire all the common oxides melt and volatilize at a far lower temperature than the Pt. after the process. Again many of the oxides become conductors at the temperature of incandescent Pt. All the known oxides are to be tried in various vacuums for it is thought that some one may answer the purpose or a hint be given as to a method of preparing the oxides, as Pt. has been prepared.; fr. 848 Pump No. 4 broken repaired and changed, notes on insulated spiral vacuum lamp expts; fr. 849 spirals are now sealed in thus

Mentions

Date

1879-10-08

Decade

1870-1879

Identifier

N085129

Folder Set

N085

Title

[N085129], Technical Note, Francis Robbins Upton, October 8th, 1879

Microfilm ID

35:847

Publisher

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