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  2. Fermat's principle - Wikipedia

    en.wikipedia.org/wiki/Fermat's_principle

    On 30 January 1809, [60] Pierre-Simon Laplace, reporting on the work of his protégé Étienne-Louis Malus, claimed that the extraordinary refraction of calcite could be explained under the corpuscular theory of light with the aid of Maupertuis's principle of least action: that the integral of speed with respect to distance was a minimum. The ...

  3. Street light - Wikipedia

    en.wikipedia.org/wiki/Street_light

    Some street lights in New York City have an orange or red light on top of the luminaire (light fixture) or a red light attached to the lamppost. This indicates that near to this lighting pole or in the same intersection, there is a fire alarm pull box. [ 92 ]

  4. Distance from a point to a line - Wikipedia

    en.wikipedia.org/.../Distance_from_a_point_to_a_line

    The distance (or perpendicular distance) from a point to a line is the shortest distance from a fixed point to any point on a fixed infinite line in Euclidean geometry. It is the length of the line segment which joins the point to the line and is perpendicular to the line. The formula for calculating it can be derived and expressed in several ways.

  5. Gilbert–Johnson–Keerthi distance algorithm - Wikipedia

    en.wikipedia.org/wiki/Gilbert–Johnson–Keerthi...

    GJK makes use of Johnson's distance sub algorithm, which computes in the general case the point of a tetrahedron closest to the origin, but is known to suffer from numerical robustness problems. In 2017 Montanari, Petrinic, and Barbieri proposed a new sub algorithm based on signed volumes which avoid the multiplication of potentially small ...

  6. New Mexico teen accused of killing his parents, siblings with ...

    www.aol.com/news/mexico-teen-accused-killing...

    Police in New Mexico said a 16-year-old teen killed four members of his family including his mom, dad and siblings over the weekend.

  7. ‘Nobody has seen it before’: Arsenal held to 1-1 draw at ...

    www.aol.com/nobody-seen-arsenal-held-1-132446746...

    Letting slip a 1-0 lead and securing only a draw dealt a blow to Arsenal’s Premier League title hopes as the Gunners now sit five points behind league leader Liverpool, which has two games in hand.

  8. Symmetry - Wikipedia

    en.wikipedia.org/wiki/Symmetry

    The type of symmetry is determined by the way the pieces are organized, or by the type of transformation: An object has reflectional symmetry (line or mirror symmetry) if there is a line (or in 3D a plane) going through it which divides it into two pieces that are mirror images of each other. [6]

  9. Teacher Who Got Pregnant After Raping Boy, 12, Gets 25 ... - AOL

    www.aol.com/lifestyle/teacher-got-pregnant...

    A former Tennessee teacher who got pregnant after raping a 12-year-old boy pleaded guilty and has been sentenced to 25 years in prison with no parole. On Dec. 20, Alissa McCommon, 39, of Covington ...