| Thunder rumbles because we hear sound waves from different parts of a jagged lightning stroke. |
| These new greener chillers use sound waves for cooling instead of environment-damaging chemical refrigerants linked to global warming. |
| Compared with total atmospheric pressure, airborne sound waves represent extremely small pressure changes. |
| A small sensor, the accelerometer, placed nearby then detects the sound waves and analyses their acoustic signature. |
| Ultrasound uses high frequency sound waves and magnetic resonance imaging uses radio waves. |
| The sound waves reinforce the shock wave until it finally explodes aspherically. |
