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What will you learn how to do in this lesson?

\( \require{mhchem} \)

In previous lessons you learned about the concept of wave-particle duality as it applies to matter and to light.

In this lesson, you will apply your knowledge of the wave-particle duality of light to evaluate situations in which light is best described by the wave model and situations in which it is best described by the particle model.

Road sign pointing left and right with a question mark on each side.

Question

Explain what the wave-particle duality of light means.

The wave model treats light as an electromagnetic wave. The particle model treats light as a collection of particles called photons Separately, neither a wave model nor a particle model fully explains the behavior of light.