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4.4 Waves (Definitions (Displacement
Distance and direction of a particle…
4.4 Waves
Definitions
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Wavelength
the distance between two consecutive points on a wave. E.g crest to crest, trough to trough
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Refraction
When waves change speed because of entering a different medium. sometimes there is partial reflection.
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Intensity
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Intensity is directly proportional to Asquared
As a wave spreads out, its amplitude decreases
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