Planck Constant Apparatus Physics Lab Experiment Instrument

This experimental system is designed for the study of the photoelectric effect and the verification of fundamental quantum physics principles. By measuring the stopping potential of a photoemissive surface under monochromatic light of different wavelengths, users can investigate the relationship between light frequency and photoelectron energy.

The system enables verification of the photoelectric equation, determination of Planck’s constant, and practical exploration of quantum theory concepts. Through hands-on experimentation, learners gain a deeper understanding of photoelectric phenomena and modern measurement techniques used in optical and quantum physics.

• Photoelectric effect investigation
• Measurement of stopping potential
• Verification of the photoelectric equation
• Determination of Planck’s constant
• Study of light–matter interaction
• Quantum physics fundamentals
• Spectral analysis techniques
• Precision optical measurements

Main Unit :

• Compact and integrated design with optimized component arrangement

Signal Amplifier :

• High-precision integrated circuit architecture

Monochromator :

• Diffraction grating monochromator

Photoelectric Detector :

• Spectral response range: 190–700 nm

Condensing Optics :

• Dual-lens optical condenser assembly

Light Source :

• Broad-spectrum source covering the ultraviolet and visible wavelength range

Cooling Fan :

• DC-powered thermal management system

Optional Accessories

• Spare Light Source