China Wholesale Millikans Experiment Factories – LADP-16 Apparatus for Determining Planck’s Constant – Advanced Model – Labor
China Wholesale Millikans Experiment Factories – LADP-16 Apparatus for Determining Planck’s Constant – Advanced Model – Labor Detail:
Demonstration of the photoelectric effect, measure the characteristic curve of a photoelectric tube, verify the existence of “red limit” frequency, and calculate Planck’s constant according to the Einstein’s equation of photoelectric effect
Specifications
| Description | Specifications |
| Wavelength of filters | 365 nm, 405 nm, 436 nm, 546 nm, 577 nm |
| Size of apertures | 2 mm, 4 mm, 8 mm, 10 mm, 12 mm |
| Light source | 50 W Mercury lamp |
| Photocell | Wavelength range: 340 ~ 700 nm |
| Cathode sensitivity: ≥1 µA (-2 V ≤ UKA ≤ 0 V) | |
| Anode dark current: ≤5×10-12 A (-2 V ≤ UKA ≤ 0 V) | |
| Current range | 10-7 ~ 10-13 A, 3-1/2 digit display |
| Voltage range | I: -2 ~ +2 V; II: -2 ~ +20 V, 3-1/2 digit display, stability ≤0.1 % |
| Zero drift | < ±0.2% of full scale (for scale 10-13 A) within 30 minutes after warm-up |
| Measurement method | Zero current method and compensation method |
| Measurement error | 3% |
Parts List
| Description | Qty |
| Main Unit | 1 |
| Electric Control Unit | 1 |
| Special BNC Cable | 2 |
| USB Cable | 1 |
| Software CD | 1 |
| Power Cord | 1 |
| Instructional Manual | 1 |
Product detail pictures:
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