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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.
National poll results. Poll results are listed in the table below in reverse chronological order. The highest percentage figure in each poll is displayed in bold, and its background is shaded in the leading party's colour.
Digital room correction (or DRC) is a process in the field of acoustics where digital filters designed to ameliorate unfavorable effects of a room's acoustics are applied to the input of a sound reproduction system. Modern room correction systems produce substantial improvements in the time domain and frequency domain response of the sound ...
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Born. 1768. Nationality. Scottish. Known for. invented the Nicol prism, the first device for obtaining plane polarized light. Nicol's house, 12 Inverleith Terrace, Edinburgh. Memorial to William Nicol, Warriston Cemetery. William Nicol FRSE FCS (1768? – 2 September 1851) was a Scottish geologist and physicist who invented the Nicol prism, the ...
Netflix is an American subscription video on-demand over-the-top streaming service.The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple languages.
The presence of a phase-correction coating can be checked on unopened binoculars using two polarization filters. Dielectric phase-correction prism coatings are applied in a vacuum chamber with maybe thirty or more different superimposed vapor coating layers deposits, making it a complex production process.
The standard deviation σ of X is defined as which can be shown to equal. Using words, the standard deviation is the square root of the variance of X . The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.