The physics
Wavelength is the physical distance between wave crests: wave speed divided by frequency. For light and radio, speed is the speed of light (299,792,458 m/s); for sound in air it's about 343 m/s.
Wavelength of a 440 Hz note in air (343 m/s)
Answer: wavelength = 0.779545 m (wavelength 77.9545 cm).
What we know
- Wave speed: 343 m/s
- Frequency: 440 Hz
343 m/s is the speed of sound in dry air at about 20 °C.
Step by step
- Given
- v = 343 m/s, f = 440 Hz
- Formula
- λ = v / f
- Substitute
- λ = 343 / 440
- Result
- λ = 0.779545 m
All results
| Wavelength | 0.779545 m |
|---|---|
| Wavelength | 77.9545 cm |
Open the wavelength calculator with these numbers → and change any of them.