Physics help from experts.

Physics Help

Sound

Definition of Sound

Sound is a mechanical wave that spreads through a physical medium. "Sound" also refers to the sensation to which these waves give rise when heard.

Sound in Physics Problems

Sound and Hearing

Vibrations, Waves, and the Doppler Effect

Sound Explained with Examples

Sound and the Universal Wave Equation

Doppler Effect

Ultrasound

Your satisfaction is our priority.