[N085171], Technical Note, Francis Robbins Upton, October 22nd, 1879
https://edisondigital.rutgers.edu/document/N085171
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Metadata
- Title
- [N085171], Technical Note, Francis Robbins Upton, October 22nd, 1879
- Editor's Notes
- Carbon spirals and threads. Trying to make a lamp of a carbonized thread. 100 ohms can be made from an inch of .010 inch thread. A thread with 45 ohms resistance when cold was brought up in a high vacuum to 4 candles about. It remained constant for two or three hours and then the resistance seemed to concentrate in one spot. Resistance cold 800 ohms; notes and calcs on thread lamp power requirements follow, also thread carbonized with lampblack
- Author
- Upton, Francis Robbins
- Date
- 1879-10-22
- Type
- Technical Note
- Folder ID
- N085-F
- Microfilm ID
- 35:868
- Document ID
- N085171
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 35
- Item sets
- [N085-F] Notebook #85 N-79-08-22 (1879)