Sound Waves

Sound waves
What is a sound wave?
Sound is a mechanical wave that is an oscillation of pressure transmitted through with(predicate) with(predicate) a solid, liquid, or gas, composed of frequencies within the orbital cavity of comprehend and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by much(prenominal) vibrations.

Propagating of sound
Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound female genital organ propagate through solids as well, but there atomic number 18 additional modes of propagation). During propagation, waves can be reflected, refracted, or attenuated by the mediocre.
The behavior of sound propagation is generally moved(p) by three things:
* A relationship between density and pressure. This relationship, affected by temperature, determines the speed of sound within the medium.
* The propagation is also affected by the crusade of the medium itself. For example, sound go through wind. Independent of the motion of sound through the medium, if the medium is moving, the sound is further transported.
* The viscousness of the medium also affects the motion of sound waves. It determines the rate at which sound is attenuated. For many media, such as air or water, attenuation due to viscosity is negligible.




When sound is moving through a medium that does not have constant physical properties, it may be refracted (either dot or foc utilise).

Perception of a sound
The perception of sound in any organism is go downed to a certain vomit of frequencies. For humans, hearing is normally limited to frequencies between about 20 Hz and 20,000 Hz (20 kHz), although these limits are not definite. The upper limit generally decreases with age. Other species have a different range of hearing. For example, dogs can perceive vibrations higher than 20 kHz, but are deaf to anything below 40 Hz. As a guide perceived by one of the major senses, sound is used by many species for detecting danger, navigation, predation, and...If you want to get a full essay, order it on our website: Ordercustompaper.com



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