This Planck's constant measuring instrument is special designed for processed experiment about the rule of photoelectric effect and calculate the Planck's constant according to the Einstein's equation of photoelectric effect. With an openly combined structure, it is characterized by simple operated, reliable used and high precision. In addition, it can be connected to X-Y function recorder to plot V-I characteristic curve of photoelectric tube directly and the digital micro-current measuring apparatus of this instrument can also be used to measure feeble current within 10-8A¡«10-12A in laboratory. It is more useful for experiments of modern physics and general physics in college and university.
Item
Specification
Medium Film Interference Filter
365.0nm, 404.7nm, 435.8nm, 546.1nm, 577.0nm
Sensitive Component
Vacuum Phototube
Dark-Current
¡Ü10-12A
Light Source
GGQ-50W instrumental high voltage mercury lamp
Precision of Accelerate Voltage
¡Ü2%
Measuring Error
less than ¡À 5% compared with the recognized value (h=6.62619x l034J.S)
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