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  2. Sound energy - Wikipedia

    en.wikipedia.org/wiki/Sound_energy

    In physics, sound energy is a form of energy that can be heard by living things. Only those waves that have a frequency of 16 Hz to 20 kHz are audible to humans. However, this range is an average and will slightly change from individual to individual.

  3. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Sound waves may be viewed using parabolic mirrors and objects that produce sound. [9] The energy carried by an oscillating sound wave converts back and forth between the potential energy of the extra compression (in case of longitudinal waves) or lateral displacement strain (in case of transverse waves) of the matter, and the kinetic energy of ...

  4. Acoustics - Wikipedia

    en.wikipedia.org/wiki/Acoustics

    Sound measurement and analysis reached new levels of accuracy and sophistication through the use of electronics and computing. The ultrasonic frequency range enabled wholly new kinds of application in medicine and industry. New kinds of transducers (generators and receivers of acoustic energy) were invented and put to use.

  5. Sound power - Wikipedia

    en.wikipedia.org/wiki/Sound_power

    Sound power or acoustic power is the rate at which sound energy is emitted, reflected, transmitted or received, per unit time. [1] It is defined [2] as "through a surface, the product of the sound pressure, and the component of the particle velocity, at a point on the surface in the direction normal to the surface, integrated over that surface."

  6. Absorption (acoustics) - Wikipedia

    en.wikipedia.org/wiki/Absorption_(acoustics)

    An example of a material in which absorption can observed: sound absorbing foam, also known as acoustic foam. In acoustics, absorption refers to the process by which a material, structure, or object takes in sound energy when sound waves are encountered, as opposed to reflecting the energy.

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  8. Play Just Words Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/just-words

    If you love Scrabble, you'll love the wonderful word game fun of Just Words. Play Just Words free online!

  9. 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).