Crookes discharge tube
Crookes discharge tube
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- Description (Brief)
- Crookes Magnetic Deflection Tube, marked: "P1B19". Two electrodes, large flat circular cathode in one end, thick flat circular anode near middle with hole in the center. Glass separation between halves of tube, but with hole in center in line with hole of anode. Cathode rays projected from cathode to anode, but only those in line with the holes pass into the latter half of the glass tube. Magnets will deflect phosphorescence patch and will be especially noticeable because the rays here have been narrowed down to a small beam by the holes.
- Location
- Currently not on view
- Object Name
- Discharge Tube
- Crookes tube
- crookes tube
- Other Terms
- Discharge Tube; Electron Tubes
- associated user
- unknown
- Measurements
- overall: 19 3/8 in x 4 1/2 in x 1 3/4 in; 49.2125 cm x 11.43 cm x 4.445 cm
- ID Number
- EM.323677
- catalog number
- 323677
- 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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