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  2. Rarefaction - Wikipedia

    en.wikipedia.org/wiki/Rarefaction

    Rarefaction is the reduction of an item's density, the opposite of compression. [1] Like compression, which can travel in waves ( sound waves , for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave (see picture).

  3. Longitudinal wave - Wikipedia

    en.wikipedia.org/wiki/Longitudinal_wave

    "Longitudinal waves" and "transverse waves" have been abbreviated by some authors as "L-waves" and "T-waves", respectively, for their own convenience. [1] While these two abbreviations have specific meanings in seismology (L-wave for Love wave [2] or long wave [3]) and electrocardiography (see T wave), some authors chose to use "ℓ-waves" (lowercase 'L') and "t-waves" instead, although they ...

  4. Mechanical wave - Wikipedia

    en.wikipedia.org/wiki/Mechanical_wave

    It consists of multiple compressions and rarefactions. The rarefaction is the farthest distance apart in the longitudinal wave and the compression is the closest distance together. The speed of the longitudinal wave is increased in higher index of refraction, due to the closer proximity of the atoms in the medium that is being compressed.

  5. Compression (physics) - Wikipedia

    en.wikipedia.org/wiki/Compression_(physics)

    Compression of solids has many implications in materials science, physics and structural engineering, for compression yields noticeable amounts of stress and tension. By inducing compression, mechanical properties such as compressive strength or modulus of elasticity , can be measured.

  6. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Spherical compression (longitudinal) waves ... causing local regions of compression and rarefaction, ... They can be used to describe, in absolute terms, every sound ...

  7. Magnetosonic wave - Wikipedia

    en.wikipedia.org/wiki/Magnetosonic_wave

    They are associated with compression and rarefaction of both the fluid and the magnetic field, as well as with an effective tension that acts to straighten bent magnetic field lines. The properties of magnetosonic waves are highly dependent on the angle between the wavevector and the equilibrium magnetic field and on the relative importance of ...

  8. Rubens tube - Wikipedia

    en.wikipedia.org/wiki/Rubens_tube

    If the sound is of a frequency that produces standing waves, the wavelength will be visible in the series of flames, with the tallest flames occurring at pressure nodes, and the lowest flames occurring at pressure antinodes. The pressure antinodes correspond to the locations with the highest amount of compression and rarefaction. [1]

  9. Speed of sound - Wikipedia

    en.wikipedia.org/wiki/Speed_of_sound

    In a gas or liquid, sound consists of compression waves. In solids, waves propagate as two different types. A longitudinal wave is associated with compression and decompression in the direction of travel, and is the same process in gases and liquids, with an analogous compression-type wave in solids. Only compression waves are supported in ...