Light, Sound and Waves

Big Idea: Waves carry information without causing a permanent change on the intervening medium. More info...

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Diffraction of a plane wave by multiple gaps

Demonstration: This ripple tank experiment models the action of a diffraction grating.

Practical Activity 14-16

Class practical: In this simple experiment, each student holds a pair of glass plates individually.

Practical Activity 14-16

Given some radiation, how can one tell whether or not it has wave properties? Superposition experiments offer an answer. Radio...

Teaching Guidance 11-14 14-16