1. The Doppler effect explains changes in the length of light waves or sound waves as they move toward you or away from you.
2. In a cultural world in which even the use of a microphone creates shock waves, how will the new onslaught of electronic sound change people's expectations?
3. In the neighborhood, the sound of mahjong tiles clacking against tables rises in waves as the games progress.
4. Visitors feel like visiting the Pacific area with sound effects of ocean waves.
5. A sound absorbing pad on top vibrates when sound waves hit it, causing the tiny zinc oxide wires to compress and release.