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  2. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    A wavy structure is easier to mass-produce than a prismatic one using conventional diamond machine tools, which are used to make the rollers used to imprint the wavy structure into plastic sheets, thus producing prism sheets. [112] A diffuser sheet is placed on both sides of the prism sheet to distribute the light of the backlight uniformly ...

  3. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.

  4. Platonic solid - Wikipedia

    en.wikipedia.org/wiki/Platonic_solid

    This follows from the spherical excess formula for a spherical polygon and the fact that the vertex figure of the polyhedron {p,q} is a regular q-gon. The solid angle of a face subtended from the center of a platonic solid is equal to the solid angle of a full sphere (4 π steradians) divided by the number of faces. This is equal to the angular ...

  5. Taylor series - Wikipedia

    en.wikipedia.org/wiki/Taylor_series

    t. e. In mathematics, the Taylor series or Taylor expansion of a function is an infinite sum of terms that are expressed in terms of the function's derivatives at a single point. For most common functions, the function and the sum of its Taylor series are equal near this point.

  6. Why a scandal consuming a Trump protégé could harm the ex ...

    www.aol.com/news/why-scandal-consuming-trump...

    North Carolina’s sitting Gov. Roy Cooper, a two-term Democrat, broadened the scandal beyond Robinson and sought to link it to Trump. “Donald Trump and NC GOP leaders embraced Mark Robinson for ...

  7. Richard Feynman - Wikipedia

    en.wikipedia.org/wiki/Richard_Feynman

    Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he proposed the parton model.

  8. List of Greek mythological figures - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_mythological...

    Talaus, a king of Argos who sailed with the Argonauts. Tegyrios, a king of Thrace. Telamon, a king of Salamis and father of Ajax; he sailed with the Argonauts and participated in the Calydonian boar hunt. Telephus, a king of Mysia and son of Heracles. Temenus, a king of Argos and descendant of Heracles.

  9. Density functional theory - Wikipedia

    en.wikipedia.org/wiki/Density_functional_theory

    Density functional theory (DFT) is a computational quantum mechanical modelling method used in physics, chemistry and materials science to investigate the electronic structure (or nuclear structure) (principally the ground state) of many-body systems, in particular atoms, molecules, and the condensed phases. Using this theory, the properties of ...