[D7802ZZDV], Letter from Moses Gerrish Farmer to Thomas Alva Edison, October 7th, 1878

Item

Abstract

encloses small piece of iridium as needle for phono will probably answer better than steel and a little inferior to a ruby; also good for EL, gives more light and to higher heat than platinum, but not as good as carbon bar in vacuum or nitrogen; describes his own expts with EL

Date

1878-10-07

Decade

1870-1879

Type

Identifier

D7802ZZDV

Folder Set

D7802

Title

[D7802ZZDV], Letter from Moses Gerrish Farmer to Thomas Alva Edison, October 7th, 1878

Microfilm ID

16:188

Publisher

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