[N020057], Technical Note, Thomas Alva Edison, June 18th, 1879
https://edisondigital.rutgers.edu/document/N020057
PDF: Archive.org
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Metadata
- Title
- [N020057], Technical Note, Thomas Alva Edison, June 18th, 1879
- Editor's Notes
- Record of well ground chalks etc for chemical telephone, Nos. 1-26--again prob use as refs for letters; following these are sketches of experimental telephone arrangements, notes on ways to test chalks, including instructions to Upton that may be related to Upton tests that follow in notes on chalks tested; fr. 1019 Fundamental experiments with various chalks seem to be pressure, wetness, and sound and Upton's tests for resistance and deflection after rubbing?, include those noted above and original designs
- Author
- Edison, Thomas Alva
- Mentioned
- Upton, Francis Robbins
- Date
- 1879-06-18
- Type
- Technical Note
- Folder ID
- N020-F
- Microfilm ID
- 30:997
- Document ID
- N020057
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 30