Photocell For Determining 

Planck's Constant

For proving the photoelectric effect with visible light, for investigating the frequency dependency of the photoelectric current and for determination of Planck's constant based on the counter-field method; vacuum photocell with alkaline cathode and annular platinum electrode.

Technical Data:

• Cathode area: 12 cm² approx.
• Limiting wavelength: 700 nm approx.
• Reverse voltage: 0 to 2 V DC
• Heating: 2 V DC/1.5 A
• Connections
  Cathode: metal cap
  Anode: E 14 socket
• Dimensions: 11 cm x 4 cm diam.

INSTRUCTIONS FOR USE PLEASE CLICK HERE