Photoelectric Effect Planck Constant Experimental Instrument

This experimental system is designed to determine Planck’s constant using the photoelectric effect. By measuring the stopping potential corresponding to different frequencies of incident light, users can establish the relationship between light frequency and photoelectron energy.

The collected data can be used to plot a stopping potential versus frequency graph and perform linear analysis. From the slope of the resulting line, Planck’s constant can be calculated, providing a practical demonstration of quantum theory and the photoelectric effect.

• Photoelectric effect investigation
• Measurement of stopping potential
• Determination of Planck’s constant
• Frequency-dependent photoelectric analysis
• Verification of quantum theory concepts
• Data acquisition and curve fitting
• Linear regression analysis
• Fundamental optical and quantum physics experiments

Main Unit :

• Compact integrated structure with optimized component arrangement

Light Source :

• High-pressure spectral lamp with dedicated power supply

Optical Filters :

• Filter set with 5 selectable wavelength filters

Aperture :

• 4 mm diameter

Photoelectric Detector :

• High-sensitivity photocell

Measurement Controller :

• Multifunction test and control unit with adjustable operating parameters

Cooling System :

• DC-powered cooling fan

Optional Accessories

• Spare Light Source
• Computer System
• Additional Data Processing Accessories