[N310011], Technical Note, Ezra Torrance Gilliland, Thomas Alva Edison, November 11th, 1885
https://edisondigital.rutgers.edu/document/N310011
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Title
[N310011], Technical Note, Ezra Torrance Gilliland, Thomas Alva Edison, November 11th, 1885
Editor's Notes
drawing followed by "Telephone 1/2 distance of metallic ckts with no induction makes 4 times louder-- Receiving phones diferential as to induction currents but OK as to talking currents from Induction Coils opposite direction"
Date
1885-11-11
Type
Subject
Folder/Volume ID
N310-F
Microfilm ID
42:253
Document ID
N310011
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University