Wavelength
The wavelength
is the spatial equivalent of the time period. It is the smallest distance, over a fixed time
, in which the wave is identically reproduced.
The wavelength also corresponds to the distance travelled by a wave in one period
. As the wave travels at the speed
, we therefore obtain the following relation between the quantities:
.
Remarque : Remark
For audible sounds, the wavelength varies over a large scale : from
at
to
at
. We can see that the wavelength can be very large, or very small, relative to everyday objects.
