[D8346ZBQ], Letter from Frank Julian Sprague to Thomas Alva Edison, November 22nd, 1883
https://edisondigital.rutgers.edu/document/D8346ZBQ
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Title
[D8346ZBQ], Letter from Frank Julian Sprague to Thomas Alva Edison, November 22nd, 1883
Editor's Notes
diagram illustrating testing of polarity on new indicators [Edison Effect lamps]; "there has been a slight drop on the running lamp. Hypothesizes about Edison Effect current, that it's due to vaporization of platinum. TAE marg doesn't really address causation: "We have put some of the lamps with wire in center up on test at 64 candles & find they have just as good life as Regulars & platinum dont blacken so its OK. Bergmann in getting along [illeg] with the 12; abt nxt Thurs shall have some."
Author
Recipient
Date
1883-11-22
Type
Subject
Folder/Volume ID
D8346-F
Microfilm ID
69:595
Document ID
D8346ZBQ
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University