The Photoelectric Effect
An effect had been noticed early on
that when light of a high enough frequency is shined on a metal, the metal will eject
electrons. This one effect and all of its subtle clues led Albert Einstein in 1905
to propose that light behaves as a particle-like wave packet called a photon. The
majority of prominent physicists strongly opposed this notion for a period of about 10
years. It wasn't until 1915 when Robert Millikan (initially trying to disprove
Einstein's theory) ended up verifying it completely, and convinced the rest of the physics
world.
As you go through this lesson, you will be presented with what should happen if light is a wave, and what should happen if it is a particle. Then you will be shown which is real based on experimental observations.
- Photoelectric Effect Apparatus
- Frequency of Incoming Light
- Threshold Frequency & Work Function
- Intensity of Incoming Light
- Different Materials
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