# Frequency

- Beat Frequency - The beat frequency is the absolute difference in frequency between two sound waves. This calculator helps find the beat frequency.
- Electromagnetic Wave Equation - The electromagnetic wave equation calculates the velocity of an electromagnetic wave based on its frequency and wave speed.
- Frequency of a Sound Wave - The frequency of a sound wave is calculated by dividing the velocity of sound by its wavelength. This calculator helps find the frequency of a sound wave.
- Phase Velocity of a Wave - The phase velocity of a wave is calculated by multiplying its wavelength by its frequency. This formula helps determine the phase velocity.
- Wave Speed