- Sound - Wikipedia
In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid In human physiology and psychology, sound is the reception of such waves and their perception by the brain [1]
- Sound - Simple English Wikipedia, the free encyclopedia
Sound Sound can also mean a body of water, like a bay or channel Sound is caused by sound waves It can be heard when goes through a medium to the ear All sounds are made by vibrations of molecules For example, when a person hits a drum or a cymbal the object vibrates These vibrations make air molecules move
- Speed of sound - Wikipedia
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium More simply, the speed of sound is how fast vibrations travel At 20 °C (68 °F), the speed of sound in air is about 343 m s (1,125 ft s; 1,235 km h; 767 mph; 667 kn), or 1 km in 2 91 s or one mile in 4 69 s
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- Category : Audio files - Wikimedia
Audio files From Wikimedia Commons, the free media repository See also categories: Sound, Commons audio resources and Videos by language category New subcategories fulltext Main Page topics meta categories replace Contents:
- sound - Wiktionary, the free dictionary
A sensation perceived by the ear caused by the vibration of air or some other medium He turned when he heard the sound of footsteps behind him Nobody made a sound Through all the Worlds are , the noises of moving, and the echoes of voices and song; but upon the River is no ever heard, for there all echoes die
- Sound pressure - Wikipedia
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave In air, sound pressure can be measured using a microphone, and in water with a hydrophone The SI unit of sound pressure is the pascal (Pa) [1]
- Sound - Wikipedia - BME
In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid In human physiology and psychology, sound is the reception of such waves and their perception by the brain
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