Keywords sound, sound waves, vibrations, pitch, ultrasound, visualization, navigation, material testing, medical therapy, energy, mixing substances Email us at [email protected] if you have ...

a high frequency sound wave has a high pitch; large amplitude sound waves are loud; reflected sound is called an echo; the range of human hearing is 20 Hz to 20 000 Hz; ...

Sound waves are longitudinal waves. Fast - about 330 meters per second (1083 feet per second) for sound in air, 1,500 m/s (4921 f/s) in water and 5,000 m/s (16,404 f/s) in steel. Sound requires a ...

This experiment demonstrates how water affects sound waves and pitch. You'll discover how different water levels create different musical notes and learn about the relationship between mass, vibration ...

This invention generates high-frequency sounds in the high-pitched range of human hearing, composed of sound waves between 15,000 and 20,000 cycles per second, which can annoy younger people but ...