The Photo-Electric Effect
Description:
| Photoelectric effect. 1. Connect as shown 2. If ultraviolet lamp brought closer to grid, negative amperage increase Method: 1. Shine white light source onto zinc plate 2. very slight reading on Pico ammeter 3. Next shine the ultraviolet source onto the same plate 4. Observe the pcoammeter reading of .320 x 10-9 Amps 5. Insert U.V. filter in front of copper grid |
Note: Sand copper and zinc paddles to remove oxidation
Video:
source: https://play.library.utoronto.ca/bc55c0b9cacf04a7602e0eb28f2532e3
Apparatus
High Voltage Supply
Ultraviolet Light Source
Zinc
Copper
