[NV08349], Technical Note, Edward Hibberd Johnson, Thomas Alva Edison, August 17th, 1876

Item

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Abstract

Expts on diff porous substances to replace paper in EMG; It is evident the Electro Moto Action is due entirely to the solution-- It only requires a solid to hold it"; among those tried is chalk and pyrogallic and says as "As good as paper-- God conductor at same time admits of motograph action holding solution well-- chalk not being of itself a conductor--allows the solution to perform that function alone" -- ends with "Chalk is best so far"

Date

1876-08-17

Decade

1870-1879

Identifier

NV08349

Folder Set

NV08

Title

[NV08349], Technical Note, Edward Hibberd Johnson, Thomas Alva Edison, August 17th, 1876

Microfilm ID

3:779

Publisher

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

Timestamp

August 17, 1876