A new spin on the classic method of calculating Planck's constant, this apparatus provides a simple and effective means of studying the photoelectric effect, gaining a good value for h, and exploring basic quantum mechanics
Comprising a phototube and control unit with built‐in voltmeter and nanoammeter, the apparatus can be used with three LEDs of known wavelength (included) to learn about the relationship between the energy of emitted electrons and the wavelength of incident radiation
Planck's constant can then be calculated approximately using the Planck‐Einstein relation
The in‐depth notes include explanations of a range of phenomena and theory associated with the photoelectric effect and Planck's work alongside the experimental methods
Includes:A phototube.3 LEDs (green, red, and blue)
Control unit
Power supply
Comprehensive teacher guide
Technical specifications:Power supply: 24V d
c
Voltmeter: 4 digits, sensitivity 2mV
Ammeter: 4 digits, sensitivity 5nA
Button to cut off current
LED light adjustment: 0‐100%
Anodic tension adjustmentDimensions:Control station: 190mm x 130mm, 50 x 60mm
Phototube base 130mm x 180mm x 150mm, 50mmWeight:Control station: 370g
