[N172241], Technical Note, Francis Robbins Upton, December 6th, 1880
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Title
[N172241], Technical Note, Francis Robbins Upton, December 6th, 1880
Editor's Notes
"Arrangement for testing lamps at factory." The machine used to test lamps cannot power its own field, as this would throw off calcs of current. Other notes; suggests using coal oil lamp instead of standard candles, which are very expensive. n Fr 908 placement of lamps in 5th ave office.
Author
Date
1880-12-06
Type
Folder/Volume ID
N172-F
Microfilm ID
39:902
Document ID
N172241
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University