[N085169], Technical Note, Francis Robbins Upton, October 19th, 1879

Item

Abstract

A stick of carbon brought up in a vacuum to 40 candles (say). Mr. B-- trying to make a spiral of carbon; also date of 10/21 stick of carbon about .020 and 1/2 inch long gave cold 4 ohms incandescent 2.3 ohms very good light Pt. wires melted.

Date

1879-10-19

Decade

1870-1879

Identifier

N085169

Folder Set

N085

Title

[N085169], Technical Note, Francis Robbins Upton, October 19th, 1879

Microfilm ID

35:867

Publisher

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