[D8123ZFL], Letter from Francis Robbins Upton to Thomas Alva Edison, November 25th, 1881

Item

Abstract

Wants TAE to come up and make experiments on spirals. Thinks that 13 or 14 lamps per hp at 16 candles is possible. For isolated systems, 75 ohms is enough and this results in greater economy.

Date

1881-11-25

Decade

1880-1889

Type

Identifier

D8123ZFL

Folder Set

D8123

Title

[D8123ZFL], Letter from Francis Robbins Upton to Thomas Alva Edison, November 25th, 1881

Microfilm ID

57:1009

Publisher

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

Timestamp

November 25, 1881