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Planck's Constant measuring instrument

20802.01

Art NO.: 20802.01

To make the experiment about rule of photoelectric

offect & calculate planck's constant according

To Einstein's equation of photoelectric effect.

Sensitive component: Vacuum phototube

Color filter: 635nm, 570nm, 540nm, 460nm

Dark current: =0.03μA

Precision of accelerate voltage: =2%

Light source: 12V/30W, halogen tungsten lamp

Length of the guide: 395mm

Power supply: 220V/50Hz