What is Diffraction?
Any type of
wave can be diffracted.
A diffracted wave will "spread out".
When does Diffraction happen?
Diffraction occurs when the
wavelength of a wave
is of a similar size to an obstacle or a gap in a barrier.
a wave will have the same speed, frequency and wavelength.
The Diffraction of Sound Waves.
wave with a frequency of
has a wavelength of 0·66 m (see calculations).
Sound waves will diffract (spread out) when they pass
through a doorway (which is approximately 0·8 m wide)
because the wavelength (0·66 m)
is of a similar size to the doorway (0·8 m).
The Diffraction of Electromagnetic Waves.
Electromagnetic waves have a huge range of wavelengths.
waves can diffract around hills,
mountains or even the whole planet.
Light waves can diffract through tiny slits.
X-rays can diffract around atoms.
The Diffraction of Water Waves.
waves can diffract
when passing through a gap in a harbour wall.
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