[N326007], Technical Note, Ezra Torrance Gilliland, August 27th, 1886
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Title
[N326007], Technical Note, Ezra Torrance Gilliland, August 27th, 1886
Editor's Notes
continuation of telephone experiments: "manganese peroxide-- no results-- Granulated Zinc no results Zinc is very heavy and poor conductor-- treated zinc with sulphuric acid improved its conductivity somewhat but not its talking qualities-- Tried regular standard carbon with platinum scrap clippings mixed in got good results talked as well as standard transmitter Liquorice carbon made from domestic Liquorice gave [medium?] results talked about half as well as standard Tried standart carbon with platinum disc float in chamber no improvement used dozen different signs and shaped floats-- (drawing with label "float"[
Author
Mentioned
Date
1886-08-27
Type
Subject
Folder/Volume ID
N326-F
Microfilm ID
43:816
Document ID
N326007
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University