[D8123ZDJ], Letter from Francis Robbins Upton to Thomas Alva Edison, August 5th, 1881
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Title
[D8123ZDJ], Letter from Francis Robbins Upton to Thomas Alva Edison, August 5th, 1881
Editor's Notes
Test discrepancies: lamps have resistance of 125 ohms, and are 10 per hp as measured by calorimeter. But electrical tests show only 9 per hp. Marshall and Howell have been testing the measurement standards by using instruments borrowed from Princeton. Better tests show lamp resistance of 140 and not 125 ohms. Lamps for Paris are 95 volts.
Author
Recipient
Mentioned
Date
1881-08-05
Type
Folder/Volume ID
D8123-F
Microfilm ID
57:940
Document ID
D8123ZDJ
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University