Sound

Shock Waves

Shock waves are a constructive interference of sound created by an object moving faster than…

Any sound with a frequency above 20,000 Hz (or 20 kHz)—that is, above the highest…

Pitch

Frequency is the number of waves per unit of time, and in sound is heard…

Doppler Effect

Doppler’s effect explains the perceived increase (or decrease) in the frequency of sound, light, or…

Production of Sound

Sound can be produced in many ways, by many different instruments and devices. Vibrating Strings…