A wave’s wavelength is the distance between two corresponding points on back-to-back waves. This can be measured between two wave crests or two wave troughs. In physics, the wavelength is usually represented by the Greek letter lambda (λ). A wave’s frequency is the number of times per second that it cycles. . Frequency is measured in Hertz or cycles per second. The frequency is often represented by the lowercase “f.”
The velocity of a wave is usually represented by the letter “v.” The velocity can be calculated by multiplying the frequency by the wavelength.
velocity = frequency * wavelength
or
v = f * λ
Where:
- λ = Photon wavelength, meters
- v = Velocity (m/sc)
- f = Frequency (Hz)