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  2. PRISM - Wikipedia

    en.wikipedia.org/wiki/PRISM

    On June 18, NSA Director Alexander said in an open hearing before the House Intelligence Committee of Congress that communications surveillance had helped prevent more than 50 potential terrorist attacks worldwide (at least 10 of them involving terrorism suspects or targets in the United States) between 2001 and 2013, and that the PRISM web ...

  3. Polarizer - Wikipedia

    en.wikipedia.org/wiki/Polarizer

    The Sénarmont prism is air spaced, unlike the Wollaston and Rochon prisms. These prisms truly split the beam into two fully polarized beams with perpendicular polarizations. The Nomarski prism is a variant of the Wollaston prism, which is widely used in differential interference contrast microscopy .

  4. Glasses - Wikipedia

    en.wikipedia.org/wiki/Glasses

    Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces that rest over the ears.

  5. Prism adaptation - Wikipedia

    en.wikipedia.org/wiki/Prism_Adaptation

    Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, 1909/1962). [1]

  6. Before and After (film) - Wikipedia

    en.wikipedia.org/wiki/Before_and_After_(film)

    Before and After is a 1996 American crime drama film based on Rosellen Brown's 1992 novel of the same name about two parents who must deal with the after effects when their son is accused of murder. The movie was directed by Barbet Schroeder and starred Meryl Streep as Dr. Carolyn Ryan, Liam Neeson as Ben Ryan, Edward Furlong as Jacob Ryan, and ...

  7. Prismatic World Tour - Wikipedia

    en.wikipedia.org/wiki/Prismatic_World_Tour

    Soon after, she exits the stage once more after thanking everyone for attending and introducing her band members. For the encore, an interlude called "Prism-Vision" is played, where the audience is encouraged to wear special rainbow-star diffraction glasses picked up before the show to magnify the visual effects of the performance.

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