[N119041], Technical Note, Francis Jehl, Francis Robbins Upton, September 30th, 1880

Item

Abstract

Conitinuing factory lamp tests. Lamps tested twice, with different EMF & resis (probably before and after full evacuation?). More of same, with occasional notes about blue light, bad spots, etc.

Date

1880-09-30

Decade

1880-1889

Identifier

N119041

Folder Set

N119

Title

[N119041], Technical Note, Francis Jehl, Francis Robbins Upton, September 30th, 1880

Microfilm ID

37:466

Publisher

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