[D8123ZFL], Letter from Francis Robbins Upton to Thomas Alva Edison, November 25th, 1881
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Title
[D8123ZFL], Letter from Francis Robbins Upton to Thomas Alva Edison, November 25th, 1881
Editor's Notes
Wants TAE to come up and make experiments on spirals. Thinks that 13 or 14 lamps per hp at 16 candles is possible. For isolated systems, 75 ohms is enough and this results in greater economy.
Author
Recipient
Date
1881-11-25
Type
Subject
Folder/Volume ID
D8123-F
Microfilm ID
57:1009
Document ID
D8123ZFL
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University