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Planck′s Constant Measuring Instrument

Planck′s Constant Measuring Instrument
Planck′s Constant Measuring Instrument
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Product Description

Wave length of color filter
Red 625-635nm, orange 575-585nm
Green 515-525nm, blue 465-475nm
Wave lengh of LED diode:
Red 618-622nm, orange 584-588nm
Green 528-532nm blue 483-487nm
Light source 12V/35W halogen tungsten lamp
Sensitive compontent: Vacuum phototube
Dark current: Less than 0.003ma
Precision of accelerate voltage: Less than ± 2%
Measuring error: Less than ± 15% compared with the recognized value(h=6.62619x10x34
Power supply: 220V/50Hz± 1Hz or 110V/60Hz± 1Hz

 

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