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  2. Seismic tomography - Wikipedia

    en.wikipedia.org/wiki/Seismic_tomography

    These are of lower resolution than P wave models, due to the distances involved and fewer bounce-phase data available. S waves can also be used in conjunction with P waves for differential arrival time models. Surface waves can be used for tomography of the crust and upper mantle where no body wave (P and S) data are available. Both Rayleigh ...

  3. Surface wave inversion - Wikipedia

    en.wikipedia.org/wiki/Surface_wave_inversion

    Surface-wave inversion is the method by which elastic properties, density, and thickness of layers in the subsurface are obtained through analysis of surface-wave dispersion. [2] The entire inversion process requires the gathering of seismic data, the creation of dispersion curves, and finally the inference of subsurface properties. Figure 1.

  4. Soliton - Wikipedia

    en.wikipedia.org/wiki/Soliton

    Solitary wave in a laboratory wave channel. In mathematics and physics, a soliton is a nonlinear, self-reinforcing, localized wave packet that is strongly stable, in that it preserves its shape while propagating freely, at constant velocity, and recovers it even after collisions with other such localized wave packets.

  5. Scientific visualization - Wikipedia

    en.wikipedia.org/wiki/Scientific_visualization

    Surface rendering of Arabidopsis thaliana pollen grains with confocal microscope. Scientific visualization (also spelled scientific visualisation) is an interdisciplinary branch of science concerned with the visualization of scientific phenomena. [2] It is also considered a subset of computer graphics, a branch of computer science. The purpose ...

  6. SIESTA (computer program) - Wikipedia

    en.wikipedia.org/wiki/SIESTA_(computer_program)

    Projects the electron wave functions and density onto a real-space grid to calculate the Hartree and exchange-correlation potentials and their matrix elements. Besides the standard Rayleigh-Ritz eigenstate method , it allows the use of localized linear combinations of the occupied orbitals (valence-bond or Wannier-like functions), making the ...

  7. Surface wave - Wikipedia

    en.wikipedia.org/wiki/Surface_wave

    This radiative ground wave is known as Norton surface wave, or more properly Norton ground wave, because ground waves in radio propagation are not confined to the surface. Another type of surface wave is the non-radiative, bound-mode Zenneck surface wave or Zenneck–Sommerfeld surface wave .

  8. Geometric primitive - Wikipedia

    en.wikipedia.org/wiki/Geometric_primitive

    Vector graphics consists of geometrical primitives.. In vector computer graphics, CAD systems, and geographic information systems, geometric primitive (or prim) is the simplest (i.e. 'atomic' or irreducible) geometric shape that the system can handle (draw, store).

  9. Physically based rendering - Wikipedia

    en.wikipedia.org/wiki/Physically_based_rendering

    Even though this is a rough, opaque surface, more than just diffuse light is reflected from the brighter side of the material, creating small highlights, because "everything is shiny" in the physically-based rendering model of the real world. Tessellation is used to generate an object mesh from a heightmap and normal map, creating greater detail.