Waves

The key idea

A wave is a propagating disturbance that can transfer energy and information without requiring a net transport of matter over the same distance.

Why it matters

Frequency, wavelength and propagation speed are linked; what oscillates locally depends on the kind of wave and its medium.

A picture to remember

Start with the central idea, then test it against a concrete element or example. A scientific model is useful when we know what it explains — and where its limits are.

Waves

Start with the central idea, then test it against a concrete element or example. A scientific model is useful when we know what it explains — and where its limits are.

The key idea

Start with the central idea, then test it against a concrete element or example. A scientific model is useful when we know what it explains — and where its limits are.