Mistake Master
Mistake Master · AP Physics 2 · Unit 15 · Step-Through Animation
One Light, Two Answers
You'll learnwhat turning a lamp up really changes, when to reach for the wave picture and when for the photon one, and why anything that moves has a wavelength.
Turn a lamp up and its photons do not get stronger — there are simply more of them. Ask light two different questions and it gives two different kinds of answer, and electrons do exactly the same. Twelve short steps; press Next for each one.
brighter means more photons · the question picks the model
Before you start
What you're looking at
A lamp whose photons are drawn as travelling dots, then a double slit, a metal plate, and one line for everything with momentum.
The question
What does brightness really change, and when is light a wave or a particle?
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