[D8855ABO], Letter from Arthur Edwin Kennelly to Thomas Alva Edison, September 17th, 1888
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Title
[D8855ABO], Letter from Arthur Edwin Kennelly to Thomas Alva Edison, September 17th, 1888
Editor's Notes
"The writer of the attached paper is mistaken in supposing the principle on which his instrument works to be new, for almost any text book on optics or radiant energy states it, as several works in your library will show. The idea is however ingenious and I think it strange that it has not hitherto been brought into use. I think the ordinary photometer and sliding screen is however quite suficient for practical purposes and it is the most simple. This instrument of the writer depending upon angular measurement is liable to certain errors unless special precuations are taken, from which the ordinary form of photometer is free. ### Hence although I think the idea of the writer is ingenious, and might in some cases be worth adopting as a check upon the usual measurement, I do not think it would be worth your while to purchase the invention." TAE marginalia: "Send to him. E."
Author
Recipient
Date
1888-09-17
Type
Subject
Folder/Volume ID
D8855-F
Microfilm ID
124:1034
Document ID
D8855ABO
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University