China Wholesale Dual beam IR spectrophotometer Suppliers – LADP-16 Apparatus for Determining Planck’s Constant – Advanced Model – Labor
China Wholesale Dual beam IR spectrophotometer Suppliers – LADP-16 Apparatus for Determining Planck’s Constant – Advanced Model – Labor Detail:
Planck’s Constant Experimental System applies the photoelectric effect to measure the current-voltage (I-V) characteristic curves of a photocathode against monochromatic light at different frequencies.
Experiment Examples
1. Measure I-V characteristic curve of a photoelectric tube
2. Plot U- curves
3. Calculate the follows:
a) Planck’s constant h
b) Cut-off frequency ν of cathode material of a photoelectric tube
c) Work function Ws
d) Verify Einstein’s equation
Specifications
|
Description |
Specifications |
| Light Source | Tungsten-halogen lamp: 12V/75W |
| Spectral Range | 350~2500nm |
| Grating monochromator | |
| Wavelength range | 200 ~ 800nm |
| Focal length | 100mm |
| Relative aperture | D/f = 1/5 |
| Grating | 1200l/mm (blazed@500nm) |
| Wavelength accuracy | ±3nm |
| Wavelength repeatability | ±1nm |
| Photoelectric Tube | |
| Working voltage | -2~ 40V continuously adjustable, 3-1/2 digital display |
| Spectral range | 190~700nm |
| Peak wavelength | 400±20nm |
Product detail pictures:
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