[N326001], Technical Note, Ezra Torrance Gilliland, August 25th, 1886
https://edisondigital.rutgers.edu/document/N326001
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Metadata
- Title
- [N326001], Technical Note, Ezra Torrance Gilliland, August 25th, 1886
- Editor's Notes
- notes by Gilliland: "Silicon in the L[ong] D[istance] transmitter #1 shows very high resistance, first test got no results-- measures 1800 ohms-- Heated the silica on short iron pan to dry it and burn off any organic matter that may have been in it and get a better result. With four cups carbon battery it talks about 1/3 to 1/2 as loud as a hand telephone-- measured 10,000 ohms= Ore pyrites in No 1 l.D. talks about 1/2 as good as carbon-- washed it in nitric acid improved it a very little measured [left space] ohms-- Antimony in #1 LD produced very little results about 1/2 as good as a hand telephone Resistance very low about .01 ohms. Alloy of antimony potas Talks about as loud as a hand telephone Resistance very high-- Cocoa nut Carbon-- on first test seems to work better than regular anthracite carbon it is much lighter than anthracite carbon and instrument has [better microphone?] microphonic qualities
- Author
- Gilliland, Ezra Torrance
- Mentioned
- Ott, John F
- Date
- 1886-08-25
- Type
- Technical Note
- Subject
- Telephone
- Folder ID
- N326-F
- Microfilm ID
- 43:810
- Document ID
- N326001
- 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 43
- Item sets
- [N326-F] N-86-08-25 (1886)