Be patient. This simulation might take 1 - 2 minutes to load. iPads might not work.

1. Choose one target (.e.g zinc)
2. Measure the stopping potential for different wavelengths (record your results)
3. On your computer - plot your results on a graph that allows you to determine
   1. The work function of the target
   2. The cut - off frequency
   3. Planck's constant.

HINT: If the stopping potential is 2V it means that the maximum kinetic energy of the electrons was 2ev!

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This simulation shoots individual electrons through a double slit (both) and shows the pattern on the screen.

Click the "play" button to observe the pattern.

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