Waves & Sound — three ways to learn it.

The complete written lesson — wave motion & energy transfer, transverse vs longitudinal, v = fλ, waves on a string & the ripple tank, sound and its speed, loudness–pitch–quality, superposition & interference, beats, stationary waves & harmonics, the resonance-tube practical, and the Doppler effect, with six worked numericals.

As you scroll, a live panel animates every idea: a travelling wave with a particle that only bobs, compressions sweeping through air dots, v = fλ with live readouts, two waves summed before your eyes, beats throbbing four times a second, standing-wave loops with labelled nodes, a resonance tube finding the speed of sound, and the ambulance Doppler effect.

Experiment with the apparatus on a safe, virtual bench. All of the course's hands-on physics apparatus lives here.