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  2. Prism (geometry) - Wikipedia

    en.wikipedia.org/wiki/Prism_(geometry)

    An oblique prism is a prism in which the joining edges and faces are not perpendicular to the base faces. Example: a parallelepiped is an oblique prism whose base is a parallelogram, or equivalently a polyhedron with six parallelogram faces. Right Prism. A right prism is a prism in which the joining edges and faces are perpendicular to the base ...

  3. Triangular prism - Wikipedia

    en.wikipedia.org/wiki/Triangular_prism

    In the case of a triangular prism, its base is a triangle, so its volume can be calculated by multiplying the area of a triangle and the length of the prism: where b is the length of one side of the triangle, h is the length of an altitude drawn to that side, and l is the distance between the triangular faces. [9]

  4. Minimum deviation - Wikipedia

    en.wikipedia.org/wiki/Minimum_deviation

    For a thin prism, the deviation of violet light, is and that of red light, is (). The difference in the deviation between red and violet light, ( δ v − δ r ) = ( n v − n r ) A {\displaystyle (\delta _{v}-\delta _{r})=(n_{v}-n_{r})A} is called the Angular Dispersion produced by the prism.

  5. Basal area - Wikipedia

    en.wikipedia.org/wiki/Basal_area

    Estimation using a wedge prism. A wedge prism can be used to quickly estimate basal area per hectare. To find basal area using this method, simply multiply your BAF (Basal Area Factor) by the number of "in" trees in your variable radius plot.

  6. Tidal prism - Wikipedia

    en.wikipedia.org/wiki/Tidal_Prism

    A tidal prism is the volume of water in an estuary or inlet between mean high tide and mean low tide, or the volume of water leaving an estuary at ebb tide. The inter-tidal prism volume can be expressed by the relationship: P=H A, where H is the average tidal range and A is the average surface area of the basin.

  7. Parallelepiped - Wikipedia

    en.wikipedia.org/wiki/Parallelepiped

    A parallelepiped is a prism with a parallelogram as base. Hence the volume V {\displaystyle V} of a parallelepiped is the product of the base area B {\displaystyle B} and the height h {\displaystyle h} (see diagram).

  8. Refractive index - Wikipedia

    en.wikipedia.org/wiki/Refractive_index

    The refractive index n of the liquid can then be calculated from the maximum transmission angle θ as n = n G sin θ, where n G is the refractive index of the prism. A handheld refractometer used to measure the sugar content of fruits. This type of device is commonly used in chemical laboratories for identification of substances and for quality ...

  9. Snell's law - Wikipedia

    en.wikipedia.org/wiki/Snell's_law

    Snell's law (also known as the Snell–Descartes law, the ibn-Sahl law, [1] and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

  10. Characteristic length - Wikipedia

    en.wikipedia.org/wiki/Characteristic_length

    In computational mechanics, a characteristic length is defined to force localization of a stress softening constitutive equation. The length is associated with an integration point. For 2D analysis, it is calculated by taking the square root of the area. For 3D analysis, it is calculated by taking the cubic root of the volume associated to the ...

  11. Cauchy's equation - Wikipedia

    en.wikipedia.org/wiki/Cauchy's_equation

    It deviates in the ultraviolet and infrared regions. In optics, Cauchy's transmission equation is an empirical relationship between the refractive index and wavelength of light for a particular transparent material. It is named for the mathematician Augustin-Louis Cauchy, who originally defined it in 1830 in his article "The refraction and ...