h/e Stopping Potential  – 7A10.30

- Filters (450, 500, 550, 600, 650 nm) are placed on a light source shining on a PASCO phototube.
- Connected to the apparatus is a voltmeter which displays the stopping potential for a given wavelength of light.
- Values of h can be measured within a percent or two.

Location: Jacobs B115