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The word laser is an anacronym that originated as an acronym for light amplification by stimulated emission of radiation. [1] [2] The first laser was built in 1960 by Theodore Maiman at Hughes Research Laboratories, based on theoretical work by Charles H. Townes and Arthur Leonard Schawlow.
Prism: Light the Way is a two-dimensional puzzle video game developed by British company Morpheme Game Studios. In the game, the player, with the help of "Bulboids" that emit light beams, must direct the correct color of light into the "Glowbos". To aid in this objective are a variety of mirrors, T-splitters, filter blocks, and Prisms ...
The Hedgehog Review is an interdisciplinary academic journal published triannually by the Institute for Advanced Studies in Culture (IASC) at the University of Virginia . The journal features critical writing about cultural identity, citizenship, cultural change, and cultural diversity. Each issue adopts a theme, which the articles address in ...
Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [1] Also called double vision, it is a loss of visual focus under regular conditions, and is often voluntary.
The Philosophical Review. The Philosophical Review is a quarterly journal of philosophy edited by the faculty of the Sage School of Philosophy at Cornell University and published by Duke University Press (since September 2006).
Porro prisms are most often used in pairs, forming a double Porro prism. A second prism rotated 90° with respect to the first, is placed such that light will traverse both prisms. The net effect of the prism system is a beam parallel to but displaced from its original direction, with the image rotated 180°. A double Porro system provides four ...
Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.
PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies. [1] [2] [3] The program is also known by the SIGAD US-984XN. [4] [5] PRISM collects stored internet communications based on demands made to internet companies such as Google LLC ...