OCR B Advancing Physics C6 definitions 4.0 / 5 based on 4 ratings ? PhysicsASOCR Created by: EllenCreated on: 02-04-13 15:32 Amplitude The maximum displacement from the equilibrium point. It is an indication of how much energy the wave is carrying. 1 of 18 Frequency The number of wave vibrations passing a point in one second. 2 of 18 Wavelength The length of one whole wave from corresponding points, i.e crest to crest 3 of 18 Wavespeed How fast a point on the wave pattern is moving 4 of 18 Travelling wave A wave that travels 5 of 18 Interference When two or more waves combine and produce a resultant amplitude 6 of 18 Standing waves The superposition of two travelling waves with the same wavelength travelling in opposite directions 7 of 18 Path difference The amount by which the path traveled by one wave is longer than the path traveled by another 8 of 18 Superposition When two or more waves cross, the resultant displacement is equal to the vector sum of individual displacements 9 of 18 Transmission A wave travels through a material instead of being reflected 10 of 18 Reflection The wave is bounced back when it hits a boundary 11 of 18 Refraction The wave changes direction as it enters a different medium due to a change in speed 12 of 18 Diffraction The way waves spread out as they come through a narrow gap or round an obstacle 13 of 18 Dispersion Splitting a beam of white light into colours using diffraction 14 of 18 Phase The point in the cycle that the wave is at 15 of 18 Phase difference The amount one wave lags behind another wave 16 of 18 Oscillation One complete wave cycle 17 of 18 Coherence When waves have a constant unchanging phase difference 18 of 18
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