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  2. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Sound is transmitted through gases, plasma, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves .

  3. Speed of sound - Wikipedia

    en.wikipedia.org/wiki/Speed_of_sound

    When sound spreads out evenly in all directions in three dimensions, the intensity drops in proportion to the inverse square of the distance. However, in the ocean, there is a layer called the 'deep sound channel' or SOFAR channel which can confine sound waves at a particular depth.

  4. Acoustic wave - Wikipedia

    en.wikipedia.org/wiki/Acoustic_wave

    An acoustic wave is a mechanical wave that transmits energy through the movements of atoms and molecules. Acoustic waves transmit through fluids in a longitudinal manner (movement of particles are parallel to the direction of propagation of the wave); in contrast to electromagnetic waves that transmit in transverse manner (movement of particles at a right angle to the direction of propagation ...

  5. Sound intensity - Wikipedia

    en.wikipedia.org/wiki/Sound_intensity

    Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area, also called the sound power density and the sound energy flux density. [2] The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m 2).

  6. Acoustics - Wikipedia

    en.wikipedia.org/wiki/Acoustics

    This falls within the domain of physical acoustics. In fluids, sound propagates primarily as a pressure wave. In solids, mechanical waves can take many forms including longitudinal waves, transverse waves and surface waves. Acoustics looks first at the pressure levels and frequencies in the sound wave and how the wave interacts with the ...

  7. Sound energy - Wikipedia

    en.wikipedia.org/wiki/Sound_energy

    Sound waves that have frequencies below 16 Hz are called infrasoniciis and those above 20 kHz are called ultrasonic. Sound is a mechanical wave and as such consists physically in oscillatory elastic compression and in oscillatory displacement of a fluid .

  8. Engineering students extinguish a fire with sound waves - AOL

    www.aol.com/news/2015-03-26-engineering-students...

    Guiding their exploration was the idea that if mechanical waves in general are a known means of impacting objects, then sound waves in particular may have the power to move around the elements of ...

  9. Soundwave - Wikipedia

    en.wikipedia.org/wiki/Soundwave

    Soundwave or Sound Wave may refer to: Sound, a vibration that propagates as an acoustic wave; Acoustic wave, the wave which carries sound; Festivals.