Coupled Pendulums - energy transfer. Aaltojen interferenssi. Superposition of Waves. The principle of superposition may be applied to waves whenever two (or more) waves travelling through the same medium at the same time. The waves pass through each other without being disturbed. The net displacement of the medium at any point in space or time, is simply the sum of the individual wave displacements. This is true of waves which are finite in length (wave pulses) or which are continuous sine waves. Constructive and Destructive Interference Two waves (with the same amplitude, frequency, and wavelength) are travelling in the same direction on a string.
Which is a travelling wave whose amplitude depends on the phase (phi). Two sine waves travelling in opposite directions create a standing wave A travelling wave moves from one place to another, whereas a standing wave appears to stand still, vibrating in place. This wave is no longer a travelling wave because the position and time dependence have been separated. Two sine waves with different frequencies: Beats.
Pendulum Waves. Foucaultin heiluri. Äänen voimakkuus. Vaimeneva ääni. Muuttuva äänikuvaaja.