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Planck's constant measuring instrument
Art No.20802.01
To make the experiment about rule of photoelectric effect
& calculate Planck's constant according
to Einstein's equation of photoelectric effect.
Sensitive component:Vacuum phototube
Color filter:635nm,570nm,540nm,460nm
Dark current:=0.003µA
Precision of accelerate voltage:=2%
Light source:12V/30W,halogen tungsten lamp
Length of the guide:395mm
Power supply:220V/50HZ
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