Physics-Ultrasonic Guided Waves
Basic expressions.
Physics-Ultrasonic Guided Waves
Wavenumber and wavelength
The unit of wavenumber is $ rad/mm $ or $ rad/m $ . The unit of wavelength is $ mm $ or $ m $ . Assuming the wavelength is $ \alpha \ mm $, the wavenumber is $ \beta \ rad/mm $. Then,
\[\alpha \cdot \beta = 2\pi\] This post is licensed under CC BY 4.0 by the author.