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Vacuum Photocell
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Vacuum Photocell

£282.71 exc. 20% VAT(£339.25 Inc. VAT)

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  • Evacuated photocell 
  • Demonstrates the photoelectric effect
  • Mounted on base plate
  • Electrical wiring and clamping bar
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vacuum photocell

An evacuated photocell for demonstrating the photoelectric effect. The instrument shows that the emission of electrons increases with increasing light intensity: a useful piece of laboratory equipment for those studying atomic physics.

The Vacuum Photocell features electrical wiring and a clamping bar, and is also mounted on a base plate, sturdy and ready for use. 

technical specification

  • Weight: 0.2kg
  • Dimensions: 15.2 x 10.2 x 10.2cm
  • Cathode: caesium on oxidised silver
  • Cathode area: 2.4cm2
  • Operating voltage: 50V, max. 200V
  • Working resistance: 1MΩ
  • Dark current: < 0.05μA
  • Sensitivity: 20μA/ lumen
  • Photoelectric current density: max. 3.0μA/ cm2
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