[LM111131], Letter from Arthur Edwin Kennelly to Charles Batchelor, September 19th, 1888

Item

Abstract

[image 66]"The present coil of wire on ---- section of the phonograph under is 40 turns of 0.025 [degree symbol] --- - 23 wire covered with [silt?] to 0.031 [degree symbol] having 11 feet in length and offering 0.19 " resistance####The wire required to make 5 layers of 9 turns each or 27 in all is 0.030 [degree symbol] between Nos 51 122 [BWG?] --- will be 71.6 " long and will offer 0.086 -####I ------ the present ---- of the armature is 0.4750 in which case it will have 0.215 - with the ---- wire"

Recipient

Date

1888-09-19

Decade

1880-1889

Type

Identifier

LM111131

Folder Set

LM111

Title

[LM111131], Letter from Arthur Edwin Kennelly to Charles Batchelor, September 19th, 1888

Microfilm ID

109:172

Publisher

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