Braun-type CRT with external field
name: label: maker
content: Braun, Ferdinand
notes: label: Description (Brief)
content: Experimental Cathode Ray Tube, Braun Type on a black wooden base, marked: "P2D10". CRT with fluorescent screen, one pair of electrostatic deflection plates, metal circular disc with hole in center for narrowing beam, anode, flat circular cathode. Base has external electromagnet mounted on it so that the tube fits properly in place for external focusing of the electron beam. Field coil has four binding posts for connection to voltage source. Reference: Science Museum Bulletin: Television 1937, page 31.
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.323672
label: catalog number
content: 323672
label: accession number
content: 249200
objectType: label: Object Name
content: Cathode Ray Tube
physicalDescription: label: Measurements
content: overall: 10 in x 34 in x 8 in; 25.4 cm x 86.36 cm x 20.32 cm