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In geometry, a prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy (rigidly moved without rotation) of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases.
Prism (styled as PRiSM) is a Canadian rock band formed in Vancouver in 1977. They were originally active from 1977 to 1984 and have been active again from 1987 to present. Their classic line-up consisted of lead singer Ron Tabak, guitarist Lindsay Mitchell, keyboardist John Hall, bassist Allen Harlow and drummer Rocket Norton.
The most commonly seen consequence of dispersion in optics is the separation of white light into a color spectrum by a prism. From Snell's law it can be seen that the angle of refraction of light in a prism depends on the refractive index of the prism material.
A compound prism is a set of multiple triangular prism elements placed in contact, and often cemented together to form a solid assembly. [1] The use of multiple elements gives several advantages to an optical designer: [2] One can achieve spectral dispersion without causing the deviation of the beam at the design wavelength.
The prism cover test (PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
Project 2025 proposes reclassifying tens of thousands of federal civil service workers as political appointees in order to replace them with Trump loyalists, who would be willing to bend or break protocol, or in some cases violate laws, to achieve his goals. [5] [12] It established a personnel database shaped by Trump's ideology. The project ...
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