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10 cards from this deck
Spreading of waves beyond a gap/obstacle into space beyond
λ/w\lambda/wλ/w (wavelength to opening width)
Greater diffraction occurs
Short wavelengths, less diffraction, more directional
Long wavelengths, greater diffraction, spread more
Speed, wavelength, frequency
Long wavelengths diffract more through doorways/corners
Navigation using high-freq sound echoes (bats, dolphins)
Equals the wavelength used
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