Version från den 10 februari 2015 kl. 15.13 av Hakan(diskussion | bidrag)(Skapade sidan med '{{About|the superposition principle in linear systems|other uses|Superposition (disambiguation)}} File:Anas platyrhynchos with ducklings reflecting water.jpg|thumb|right|Sup...')
Superposition of almost plane waves (diagonal lines) from a distant source and waves from the wake of the ducks. Linearity holds only approximately in water and only for waves with small amplitudes relative to their wavelengths.
