λ
Wavelength Calculator
The wavelength of light, sound or any wave from its frequency and the speed of the wave in its medium.
Result…
How it's calculated
λ = v ÷ f
A wave’s speed is set by what it travels through; its frequency is set by the source. The wavelength follows: light at 100 MHz (FM radio) is about 3 m long, visible light is 380–750 nm. Sound speed in air rises about 0.6 m/s per °C, so 343 m/s is for 20 °C.
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