The measurement of Planck's constant has being carried out in many institutions with a variety of approaches.
This experimental unit uses the photoelectric effect, where electrons stimulated by incoming light create an electric current, to experimentally determine the value of Planck's constant (h).
This unit also encourages students to get a fundamental understanding of the quantum character of light and to gain experience with experimental skill related to photoelectric effect.
- Easy operation
- Simple structure and stable performance
- Visual result reduces visual fatigue
- Ideal demonstration system for numerous users
Features:
Standard Configuration
- Light Source: Bromine-Tungsten lamp 12 V, 75 W
- Fan: 0.17 A, for abstraction of heat created by source
- Condenser: f '= 50 mm, f '= 70 mm
- Monochromator: Grating type
- Wavelength Range: 200-800 nm
- Slit Width: 0.3 mm
- Wavelength Accuracy: ±3 nm
- Wavelength Repeatability: ±1 nm
- Photoelectric Tube: GD31A type
- DC regulated Power Supply: ±1.8 V
- Measuring Amplifier: 4 stop, 100 μA, magnetoelectric
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lasers and experimental apparatus
