Puluj phosphorescent lamp
notes: label: Description (Brief)
content: 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.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Columbia University, Department of Physics, thru Alvin P. Tramm
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323684
label: catalog number
content: 323684
label: accession number
content: 249200
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: Crookes tube
label: Object Name
content: crookes tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: 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