Frequency, Wavelength, and Velocity
For many waves it is important to remember these points:
- the frequency of the wave is set by whatever is driving the oscillation in the medium. Examples are a speaker that sets up a sound wave, or the hand that shakes the end of a stretched string.
- the speed of the wave is a property of the medium.
- the wavelength of the wave is then determined by the frequency and speed:
l = v/f