[N070104], Technical Note, Charles Batchelor, February 15th, 1880
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Title
[N070104], Technical Note, Charles Batchelor, February 15th, 1880
Editor's Notes
experiments in carbonization. Impure Bristol board to 200 ohms. Had pure Bristol made of varying thicknesses; very high resistance and "have not that peculiar steel gray color that former ones had," probably due to lack of resinous matter. Soaked some in resin, got 1500 ohms. Total of 16 expts. Then some lamp tests & misc (dynamo) {This is worth a close look}
Author
Date
1880-02-15
Type
Subject
Folder/Volume ID
N070-F
Microfilm ID
34:773
Document ID
N070104
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University