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2. Rubens tube - Wikipedia

   en.wikipedia.org/wiki/Rubens_tube

   A Rubens tube, also known as a standing wave flame tube, or simply flame tube, is a physics apparatus for demonstrating acoustic standing waves in a tube. Invented by German physicist Heinrich Rubens in 1905, it graphically shows the relationship between sound waves and sound pressure, as a primitive oscilloscope. Today, it is used only ...

3. Sound - Wikipedia

   en.wikipedia.org/wiki/Sound

   A more complex signal also creates more nerve firings and so sounds louder (for the same wave amplitude) than a simpler sound, such as a sine wave. Loudness is perceived as how "loud" or "soft" a sound is and relates to the totalled number of auditory nerve stimulations over short cyclic time periods, most likely over the duration of theta wave ...

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. Whispering-gallery wave - Wikipedia

   en.wikipedia.org/wiki/Whispering-gallery_wave

   Whispering-gallery waves, or whispering-gallery modes, are a type of wave that can travel around a concave surface.Originally discovered for sound waves in the whispering gallery of St Paul's Cathedral, they can exist for light and for other waves, with important applications in nondestructive testing, lasing, cooling and sensing, as well as in astronomy.

6. Ion acoustic wave - Wikipedia

   en.wikipedia.org/wiki/Ion_acoustic_wave

   In plasma physics, an ion acoustic wave is one type of longitudinal oscillation of the ions and electrons in a plasma, much like acoustic waves traveling in neutral gas. However, because the waves propagate through positively charged ions, ion acoustic waves can interact with their electromagnetic fields , as well as simple collisions.

7. Diaphragm (acoustics) - Wikipedia

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

   The varying air pressure of sound waves imparts mechanical vibrations to the diaphragm which can then be converted to some other type of signal; examples of this type of diaphragm are found in microphones and the human eardrum. Conversely a diaphragm vibrated by a source of energy beats against the air, creating sound waves.

8. Soundwave - Wikipedia

   en.wikipedia.org/wiki/Soundwave

   Printable version; In other projects Wikidata item; Appearance. ... Soundwave or Sound Wave may refer to: Sound, a vibration that propagates as an acoustic wave;

9. Absorption (acoustics) - Wikipedia

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

   The fraction of sound absorbed is governed by the acoustic impedances of both media and is a function of frequency and the incident angle. [2] Size and shape can influence the sound wave's behavior if they interact with its wavelength, giving rise to wave phenomena such as standing waves and diffraction.