[D8305A], Letter from Houghton Farm, David Pearce Penhallow to Thomas Alva Edison, January 11th, 1883
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Title
[D8305A], Letter from Houghton Farm, David Pearce Penhallow to Thomas Alva Edison, January 11th, 1883
Editor's Notes
Would like TAE to construct an apparatus that can obtain a continuous record of soil temperatures through a thermo-electric arrangement (Dr. Draper's suggestion); wrote before on the subject to TAE. [TAE replies: "The Thermo is the best. The spot of Light from a Sim Arm Thomson galvanator - can be used to record photographically on a continuous roll the temperature = It has been done -"]
Recipient
Mentioned
Date
1883-01-11
Type
Folder/Volume ID
D8305-F
Microfilm ID
64:397
Document ID
D8305A
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University