[N14900A], Technical Note, Thomas Alva Edison, Francis Jehl, October 1880
https://edisondigital.rutgers.edu/document/N14900A
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Metadata
- Title
- [N14900A], Technical Note, Thomas Alva Edison, Francis Jehl, October 1880
- Editor's Notes
- continuation of notebook 148; lamp factory lot # 2 lamps tested with resistance coils in circuit. The usual stuff: EMF, resistance, candlepower; remarks on bad spots on carbons; observations of blue; wear at clamps; blackening of globes; arcing. Fr 59 TAE note: "the lamps tested tonight were a very nice lot, only 1 or two that are noticeably low & perhaps res for these was wrong--Apparently there is no oxidation by leakage. Must look out for cracks in tits=after test over." Fr 62 begins comparison lots 1 & 2 lamps. Fr 73 begins series looking like commutator connections.
- Mentioned
- Upton, Francis Robbins
- Date
- 1880-10-00
- Type
- Technical Note
- Folder ID
- N149-F
- Microfilm ID
- 39:2
- Document ID
- N14900A
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 39