3B Scientific U8482415 Vacuum Photocell
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Other Documentation User Manual | Evacuated photocell for demonstrating the photoelectric effect and showing that the emission of electrons increases with increasing light intensity. Mounted ready for use on a connector base with electrical wiring and shaft. Cathode: Caesium on oxidized silver. Cathode area: 2.4 square centimeters. Operating voltage: 50 volts, maximum 200 volts, Working resistance: 1 megaohm. Dark current: Less than 0.05 microampere. Sensitivity: 20 microamperes/lumen. Photoelectric current density: max. 3.0 microampere/ square centimeters.