This instrument can carry on the experiment about the rule of photoelectric effect, and calculate Planck's constant according to Einstein's equation of photoelectric effect. Satisfying the students' grouping experiments, the instrument has features such as compact structure, fastness, convenient operating, steady performance, cheap and convenient service etc. The anode of phototube is not shined directly, so the reverse current is small.
Item
Specification
Color Filter
3635nm, 570nm, 540nm, 500nm, 460nm
Sensitive Component
Vacuum Phototube
Dark-Current
¡Ü0.003uA
Light Source
12V/30W Halogen Tungsten Lamp
Length of Guide
395mm
Precision of Accelerate Voltage
¡Ü2%
Measuring Error
less than ¡À l5% compared with the recognized value (h=6.62619x l034J.S)
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