Acoustics


 * Definitions**


 * -Speed:** A rate (usually rapid) at which something happens.



- **Frequency****:** Is the number of occurrences of a repeating event per unit time.

-** Wavelength: ** The distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave.

** -Longitudinal: ** related with the acoustic are waves that have the same direction of oscillation or vibration along their direction of travel, which means that the oscillation of the medium (particle) is in the same direction or opposite direction as the motion of the wave. Mechanical longitudinal waves have been also referred to as compressional waves or compression waves.



** -Transverse :** also known as shear waves, have an additional property of polarization and are not a possible characteristic of sound waves. Sound characteristics can depend on the type of sound waves (longitudinal versus transverse) as well as on the physical properties of the transmission medium.