[D8822AAG], Letter from A D Tingley to Thomas Alva Edison, March 26th, 1888
https://edisondigital.rutgers.edu/document/D8822AAG
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- Title
- [D8822AAG], Letter from A D Tingley to Thomas Alva Edison, March 26th, 1888
- Editor's Notes
- "I have an acoustic telephone with which I can plainly talk 5 miles with only 20 ft. on each end strained taut--The balance may lay on the ground or under water or be strung on poles and trees and wound around a piece of hardwood each 4 [unclear] and yet it will work all O.K. I am looking for the best insulator against absorbing the pulsation or vibration. Thinking possibly your wide experience may have demonstrated something in this line I presume to ask you the question. ### I have used wooden pins and wound them 1 inch thinck with woolen and cotton felt and they work pretty well. ### If you should happen to know and would kindly tell me your experience if not presuming on my part I remain" [Marginalia: "Never experimented much in that line. Experiment is only way to get at it."]
- Author
- Tingley, A D
- Recipient
- Edison, Thomas Alva
- Date
- 1888-03-26
- Type
- Letter
- Folder ID
- D8822-F
- Microfilm ID
- 122:702
- Document ID
- D8822AAG
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- License
- CC0 1.0 Universal
- Has Version
- Archive.org Viewer, Microfilm Series Reel 122