China Wholesale Planck Constant Factory – LADP-14 Determining Specific Charge of Electron – Advanced Model – Labor
China Wholesale Planck Constant Factory – LADP-14 Determining Specific Charge of Electron – Advanced Model – Labor Detail:
Experiments
1. Quantitatively measure the rules of electron movement in both electric and magnetic field.
a) Electrical deflection: electron + transversal electric field
b) Electrical focusing: electron + longitudinal electric field
c) Magnetic deflection: electron + transversal magnetic field
d) Spiral motion magnetic focusing: electron + longitudinal magnetic field
2. Determine e/m ratio of an electron and verify the polar coordinate equation of electron spiral motion.
3. Measure geomagnetic component.
The instruction manual contains comprehensive materials including experimental configurations, principles, step-by-step instructions and some experimental results. Please click Experiment Theory and Contents to find more information about this apparatus.
Specifications
| Description | Specifications |
| Filament | voltage 6.3 VAC; current 0.15 A |
| High voltage UA2 | 600 ~ 1000 V |
| Deflecting voltage | -55 ~ 55 V |
| Grid voltage UA1 | 0 ~ 240 V |
| Control grid voltage UG | 0 ~ 50 V |
| magnetization current | 0 – 2.4 A |
| Solenoid parameters | |
| Longitudinal coil (long) | length: 205 mm; inner dia: 90 mm; outer dia: 95 mm; number of turns: 1160 |
| Transversal coil (small) | length: 20 mm; inner dia: 60 mm; outer dia: 65 mm; number of turns: 380 |
| Digital meters | 3-1/2 digits |
| Sensitivity of electrical deflection | Y: ≥0.38 mm/V; X: ≥0.25 mm/V |
| Sensitivity of magnetic deflection | Y: ≥0.08 mm/mA |
| e/m measurement error | ≤5.0% |
Parts List
| Description | Qty |
| Main unit | 1 |
| CRT | 1 |
| Long coil (solenoid coil) | 1 |
| Small coil (deflection coil) | 2 |
| Division screen | 1 |
| Cable | 2 |
| Instructional manual | 1 |
Product detail pictures:
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