The Photoelectric Effect lesson illustration

 

The fastest speed in the universe is the speed of ____


B.
Experiments Supporting Particle Theory of Light (20th century)

 

 

Experiment in the late 1800's baffles scientists.

The Photoelectric Effect lesson illustration

 

Light is not acting like a wave!

The Photoelectric Effect lesson illustration 

Experiment scientists
 can't explain is called…

 

showmethephysics.com

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- when light is exposed
to the surface
of certain metals,
 the light energy is absorbed and electrons
 are ejected


Light
(or other electromagnetic radiation)

Emitted electrons are called PHOTOELECTRONS

The Photoelectric Effect lesson illustration

Photosensitive metal

 

 

 

 

The light’s energy causes
 the emission of electrons

 

 

 

The Photoelectric Effect lesson illustrationUnexpected ResultsThe Photoelectric Effect lesson illustration

Try this at Home

Coanda Effect, Leaf Blower, Volleyball
 - "Show Me The Physics"