is: the ability of waves to bend around obstacles or to be spread by apertures. [P5.7, P6.1, P6.2]
depends for its amount: on the relationship between the wavelength of the wave and the size of the obstacle or aperture. [P5.7, P6.1, P6.2]
is negligible: when the wavelength is much less than the size of the obstacle or aperture. [P5.7, P6.1, P6.2]
is greatest: when the wavelength is about the same size as the obstacle or aperture. [P5.7, P6.1, P6.2]
Copyright 1997, The Open University