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10 cards from this deck
Change in wave direction when entering new medium at angle
One part of wave speeds up/slows down before the other part
Stays the same
Changes proportionally
v=fλv = f\lambdav=fλ
Speed & wavelength change, but NO direction change
Faster in warm air
Air higher up is warmer than air near ground
Sound waves refract downward toward ground in temp inversion
Line perpendicular to wave direction, all points same cycle
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