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  2. S wave - Wikipedia

    en.wikipedia.org/wiki/S_wave

    Unlike P waves, S waves cannot travel through the molten outer core of the Earth, and this causes a shadow zone for S waves opposite to their origin. They can still propagate through the solid inner core: when a P wave strikes the boundary of molten and solid cores at an oblique angle, S waves will form and propagate in the solid medium. When ...

  3. Seismic wave - Wikipedia

    en.wikipedia.org/wiki/Seismic_wave

    P wave and S wave from seismograph Velocity of seismic waves in Earth versus depth. [1] The negligible S-wave velocity in the outer core occurs because it is liquid, while in the solid inner core the S-wave velocity is non-zero. A seismic wave is a mechanical wave of acoustic energy that travels through the Earth or another planetary body.

  4. Shadow zone - Wikipedia

    en.wikipedia.org/wiki/Shadow_zone

    S wave velocity is equal to: / S wave velocity is entirely dependent on the rigidity of the material it travels through. Liquids have zero rigidity, making the S wave velocity zero when traveling through a liquid. Overall, S waves are shear waves, and shear stress is a type of deformation that cannot occur in a liquid.

  5. Low-velocity zone - Wikipedia

    en.wikipedia.org/wiki/Low-velocity_zone

    The LVZ shows a reduction in velocity of about 3–6% with the effect being more pronounced with S-waves compared to P-waves. [9] As is evident from the figure, the reduction and depth over which reduction occurs varies with the choice of tectonic province, that is, regions differ in their seismic characteristics.

  6. Seismic velocity structure - Wikipedia

    en.wikipedia.org/wiki/Seismic_Velocity_Structure

    Deeper into the lower mantle, the debate over seismic characteristics continues, with theories of partial melting around the 1000 km depth mark to justify the attenuation of S-wave velocities. [ 21 ] [ 57 ] This molten state may cause a segregation of materials, resulting in a concentration of magnesium-rich olivine in the lower regions and ...

  7. Elon Musk's X settles Donald Trump's free speech lawsuit ...

    www.aol.com/elon-musks-x-settles-donald...

    Elon Musk's X has agreed to settle a lawsuit President Donald Trump brought against Twitter for approximately $10 million, multiple news outlets reported. Trump sued Twitter and Facebook officials ...

  8. Here’s what federal judges could do if they’re ignored by the ...

    www.aol.com/federal-judges-could-ignored-trump...

    Recent court orders slowing down or indefinitely blocking President Donald Trump’s policy blitz have raised the specter that the executive branch might openly flout the federal judiciary and ...

  9. Wave - Wikipedia

    en.wikipedia.org/wiki/Wave

    A standing wave, also known as a stationary wave, is a wave whose envelope remains in a constant position. This phenomenon arises as a result of interference between two waves traveling in opposite directions. The sum of two counter-propagating waves (of equal amplitude and frequency) creates a standing wave. Standing waves commonly arise when ...