[D8818AOO], Letter from Thomas Alva Edison to Harry Ward Leonard, July 6th, 1888
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Title
[D8818AOO], Letter from Thomas Alva Edison to Harry Ward Leonard, July 6th, 1888
Editor's Notes
In reference to your letter 29th ult., if you will send me a description of the lamps you intend to put up, volts marked on them, c.p. &c., I will send you twenty-five lamps for test. Remember that our lamp is an old 8 1/2 c. p. lamp improved to run at 16 candles, so to get a fair comparison the C. P. & Q. R. R. Co. should get 10 c. p. lamps and run them about 20 c. p., so as to get 240 candles per h.p., and they should be about the same volts as ours, as it is much more difficult to make a 16 c. p. lamp at 240 and 100 volts than a 16 at 50 volts or putting up a 10 per h. p. lamp to 25 or 30 candles to reach 240 candles per h.p.
Author
Recipient
Mentioned
Date
1888-07-06
Type
Folder/Volume ID
D8818-F
Microfilm ID
122:418
Document ID
D8818AOO
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University