Waves
Wave motion
Particles β₯ to travely = A sin(kx β Οt)v = fΞ»
Calculated
Wave speed v1.00 m/s
Period T2.00 s
Angular freq Ο3.142 rad/s
Wave number k3.142 rad/m
Curriculum
WAECNECOIGCSESATJUPEB
π Teacher notes
- β’Watch the red particle: it only moves UP and DOWN while the wave pattern moves RIGHT β the wave transports energy, not matter.
- β’v = fΞ» is the single most examined wave equation. The green bracket marks one wavelength.
- β’Doubling frequency at fixed speed halves the wavelength β try it with the sliders.
- β’Examples: water surface waves, waves on a string, ALL electromagnetic waves.
- β’The particle completes one full oscillation in exactly one period T = 1/f.
βοΈ Exercises