experimental photocell tube
date: label: date made
content: 1930
notes: label: Description (Brief)
content: A 4-pin plastic base with plaster cement (detached), two copper lead wires, rectangular element vertically mounted inside a tipless T-shaped envelope. The element appears to be a piece of glass coated on both sides. One electrode is attached to the top of the element, the other electrode is attached to the bottom, both on the same side. A getter disk is set above the element on a support rod. Paper label reads: "2d-31 / V.B.T. 5/20/[19]30 / .250 meg / light / 5:1 ratio / D-6"; inked on envelope: "T-4-[??] D-6".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN80510U22
objectType: label: Object Name
content: photocell
label: Other Terms
content: Image Orthicon, Kinolamp; Electron Tubes
physicalDescription: label: Physical Description
content: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 6 1/4 in x 1 3/4 in; 15.875 cm x 4.445 cm