Albert Einstein obtained The 1921 Nobel Prize in Physics 
"for his services to Theoretical Physics, and especially for
his discovery of the law of the photoelectric effect"


In this simulation of a photoelectric effect experiment, light of a particular frequency shines on a metal plate.

If the energy of the photons is larger than the work function of the metal, electrons are ejected.

Your task is to create a graph that will allow you to find the value of Planck's constant.

Print the worksheet:

Click on the Simulation and complete the activity.

Build an inexpensive LED Photoelectric Effect apparatus (*):

(*) Designed by Wayne Garver, University of Missouri, St. Louis
Photoelectric Apparatus
Photoelectric Effect Lab