Topic 4.5: Wave Properties Flashcards Preview

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Flashcards in Topic 4.5: Wave Properties Deck (7)
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Define Refraction

o REFRACTION: Change of direction at a boundary due to different wavespeed


• 4.5.2: State and apply Snell’s law

SNELL’S LAW: For two particular media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant.


Define diffraction

o DIFFRACTION: The spreading of waves when they pass through an opening or round an obstacle.


Define superposition

o SUPERPOSITION: When two waves pass the same point at the same time, their displacements are added together to calculate the resultant displacement.


Define interference

o INTERFERENCE: Superposition of coherent sources resulting in an interference pattern.


Define constructive/destructive

o CONSTRUCTIVE/ DESTRUCTIVE: Interference in which the resultant is reinforced/ cancelled.


Define coherent

o COHERENT: Sources of waves with a constant phase difference are coherent.