[D8337ZBX], Letter from Charles Batchelor to Thomas Alva Edison, June 12th, 1883

https://edisondigital.rutgers.edu/document/D8337ZBX

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Title

[D8337ZBX], Letter from Charles Batchelor to Thomas Alva Edison, June 12th, 1883

Editor's Notes

Asks about testing lamps at 64cp; "do you make them give 64 candles all the time by keeping them in Photometer & regulating-- the way I do is as follows-- Test lamp in Photometer for 64 Candles & see how many volts & then keep this volts on it until it goes out regardless of candlepower-- Am I right?" TAE: "We do the same--but get economy at same time & also sometimes put lamps back after burning some time to get fall in Candle power Does Upton send you curves we are making.." {annote with MBN001:9, MNB012}

Date

1883-06-12

Decade

1880-1889

Type

Folder/Volume ID

D8337-F

Microfilm ID

67:754

Document ID

D8337ZBX

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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