Puluj phosphorescent lamp
Puluj phosphorescent lamp
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- Description (Brief)
- Puluj phosphorescent lamp, marked: "P1B10". Two electrodes including large circular cathode. External loops connect to power source. Slanted phosphorescent screen illustrates the extent of dark space (cathode ray penetration) by phosphorescent patch for a moderate vacuum and the straight line properties of cathode rays under normal conditions from cathode surface for higher vacuum. Magnetic deflections noticeable. Crookes interpreted these effects as support for his molecular torrent theory of the nature of cathode rays. See Max Kohl A.G. (Chemnitz, Germany) catalog, No.100, vol. III (1927?) page 1014, #95823.
- Location
- Currently not on view
- Object Name
- Electron Tube
- Crookes tube
- crookes tube
- Other Terms
- Electron Tube; Electron Tubes
- Measurements
- overall: 11 3/4 in x 4 1/2 in x 1 3/4 in; 29.845 cm x 11.43 cm x 4.445 cm
- ID Number
- EM.323684
- catalog number
- 323684
- accession number
- 249200
- Credit Line
- from Columbia University, Department of Physics, thru Alvin P. Tramm
- See more items in
- Work and Industry: Electricity
- Data Source
- National Museum of American History
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