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 |