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The Portal for Real-time Information Sharing and Management (PRISM), whose existence was revealed by the NSA in July 2013. This is an internal NSA program for real-time sharing of information which is apparently located in the NSA's Information Assurance Directorate. [202]
Portal Stories: Mel. Portal Stories: Mel is a 2015 single-player modification for Portal 2 developed and published by Prism Studios. Like the official Portal games, it is a puzzle-platform game that involves placing interconnected "portals" to solve puzzles. Set in the Portal universe, players control the test subject Mel, who has to escape an ...
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 ...
Northwestern State guard Duane Posey (who played high school ball at Memphis East) also entered the portal last week. Posey (6-7) played in 29 games (11 starts) for the Demons, averaging 6.7 ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
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In a prism, the angle of deviation (δ) decreases with increase in the angle of incidence (i) up to a particular angle.This angle of incidence where the angle of deviation in a prism is minimum is called the minimum deviation position of the prism and that very deviation angle is known as the minimum angle of deviation (denoted by δ min, D λ, or D m).
Lamps as seen through a prism. In optics, a dispersive prism is an optical prism that is used to disperse light, that is, to separate light into its spectral components (the colors of the rainbow ). Different wavelengths (colors) of light will be deflected by the prism at different angles. [1] This is a result of the prism material's index of ...