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Visibility, in meteorology, is a measure of the distance at which an object or light can be seen. Visibility may also refer to: * A measure of turbidity in water quality control * Interferometric visibility, which quantifies interference contrast in optics * The reach of information hiding, in computing * Visibility (geometry), a geometric abstraction of real-life visibility * Visible spectrum, the portion of the electromagnetic spectrum that is visible to the human eye * Visual perception ** Naked-eye visibility Visible may also refer to: * ''Visible'' (album), a 1985 album by CANO * '' Visible: Out on Television'', a 2020 miniseries from Apple TV+, about LGBTQ+ representation in TV * Visible spectrum, light which can be seen by the human eye * Visible (wireless service), an offshoot phone service from Verizon Communications See also * * * Transparency (other) * Vis (other) * Vision (other) Vision, Visions, or The Vision may refer to: ...
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Visibility
The visibility is the measure of the distance at which an object or light can be clearly discerned. In meteorology it depends on the transparency of the surrounding air and as such, it is unchanging no matter the ambient light level or time of day. It is reported within surface weather observations and METAR code either in meters or statute miles, depending upon the country. Visibility affects all forms of traffic: roads, sailing and aviation. The geometric range of vision is limited by the curvature of the earth and depends on the eye level and the height of the object being viewed. In geodesy, the atmospheric refraction must be taken into account when calculating geodetic visibility. Meteorological visibility Definition ICAO Annex 3 ''Meteorological Service for International Air Navigation'' contains the following definitions and note: :a) the greatest distance at which a black object of suitable dimensions, situated near the ground, can be seen and recognized when o ...
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Turbidity
Turbidity is the cloudiness or haziness of a fluid caused by large numbers of individual particles that are generally invisible to the naked eye, similar to smoke in air. The measurement of turbidity is a key test of water quality. Fluids can contain suspended solid matter consisting of particles of many different sizes. While some suspended material will be large enough and heavy enough to settle rapidly to the bottom of the container if a liquid sample is left to stand (the settable solids), very small particles will settle only very slowly or not at all if the sample is regularly agitated or the particles are colloidal. These small solid particles cause the liquid to appear turbid. Turbidity (or haze) is also applied to transparent solids such as glass or plastic. In plastic production, haze is defined as the percentage of light that is deflected more than 2.5° from the incoming light direction. Causes and effects Turbidity in open water may be caused by growth of phyto ...
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Interferometric Visibility
The interferometric visibility (also known as interference visibility and fringe visibility, or just visibility when in context) is a measure of the display contrast, contrast of ''Interference (wave propagation), interference'' in any system subject to wave superposition. Examples include as optics, quantum mechanics, water waves, sound waves, or electrical signals. Visibility is defined as the ratio of the amplitude of the interference pattern to the sum of the powers of the individual waves. The interferometric visibility gives a practical way to measure the Coherence (physics), coherence of two waves (or one wave with itself). A theoretical definition of the coherence is given by the degree of coherence, using the notion of correlation. Generally, two or more waves are wave superposition, superimposed and as the phase difference between them varies, the power (physics), power or intensity (physics), intensity (probability or population in quantum mechanics) of the resulting wave ...
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Information Hiding
In computer science, information hiding is the principle of segregation of the ''design decisions'' in a computer program that are most likely to change, thus protecting other parts of the program from extensive modification if the design decision is changed. The protection involves providing a stable interface which protects the remainder of the program from the implementation (whose details are likely to change). Written in another way, information hiding is the ability to prevent certain aspects of a class or software component from being accessible to its clients, using either programming language features (like private variables) or an explicit exporting policy. Overview The term ''encapsulation'' is often used interchangeably with information hiding. Not all agree on the distinctions between the two, though; one may think of information hiding as being the principle and encapsulation being the technique. A software module hides information by encapsulating the information ...
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Visibility (geometry)
In geometry, visibility is a mathematical abstraction of the real-life notion of visibility. Given a set of obstacles in the Euclidean space, two points in the space are said to be visible to each other, if the line segment that joins them does not intersect any obstacles. (In the Earth's atmosphere light follows a slightly curved path that is not perfectly predictable, complicating the calculation of actual visibility.) Computation of visibility is among the basic problems in computational geometry and has applications in computer graphics, motion planning, and other areas. Concepts and problems * Point visibility * Edge visibilityE. Roth, G. Panin and A. Knoll,Sampling feature points for contour tracking with graphics hardware, "In International Workshop on Vision, Modeling and Visualization (VMV)", Konstanz, Germany, October 2008. * Visibility polygon * Weak visibility *Art gallery problem or museum problem *Visibility graph ** Visibility graph of vertical line segments * Wat ...
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Visible Spectrum
The visible spectrum is the portion of the electromagnetic spectrum that is visual perception, visible to the human eye. Electromagnetic radiation in this range of wavelengths is called ''visible light'' or simply light. A typical human eye will respond to wavelengths from about 380 to about 750 nanometers. In terms of frequency, this corresponds to a band in the vicinity of 400–790 Terahertz (unit), terahertz. These boundaries are not sharply defined and may vary per individual. Under optimal conditions these limits of human perception can extend to 310 nm (ultraviolet) and 1100 nm (near infrared). The optical spectrum is sometimes considered to be the same as the visible spectrum, but some authors define the term more broadly, to include the ultraviolet and infrared parts of the electromagnetic spectrum as well. The spectrum does not contain all the colors that the human visual system can distinguish. ''Excitation purity, Unsaturated colors'' such as pink, or ...
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Visual Perception
Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment. This is different from visual acuity, which refers to how clearly a person sees (for example "20/20 vision"). A person can have problems with visual perceptual processing even if they have 20/20 vision. The resulting perception is also known as vision, sight, or eyesight (adjectives ''visual'', ''optical'', and ''ocular'', respectively). The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in linguistics, psychology, cognitive science, neuroscience, and molecular biology, collectively referred to as vision science. Visual system In humans and a number of other mammals, light enters the eye through the cornea and is ...
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Naked-eye Visibility
Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnifying, light-collecting optical instrument, such as a telescope or microscope, or eye protection. Vision corrected to normal acuity using corrective lenses is still considered "naked". In astronomy, the naked eye may be used to observe celestial events and objects visible without equipment, such as conjunctions, passing comets, meteor showers, and the brightest asteroids, including 4 Vesta. Sky lore and various tests demonstrate an impressive variety of phenomena visible to the unaided eye. Basic properties Some basic properties of the human eye are: *Quick autofocus from distances of 25 cm (young people) to 50 cm (most people 50 years and older) to infinity. *Angular resolution: about 1 arcminute, approximately 0.017° or 0.0003 radians, which corresponds to 0.3 m at a 1 km distance. *Field of view (FOV): simultaneous visual perception ...
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Visible (album)
''Visible'' was an album by the Canadian progressive rock band, CANO, released in 1985. It was the band's final studio album. Marcel Aymar, David Burt, Michel Dasti and Michel Kendell were joined on ''Visible'' by Ben Mink replacing Wasyl Kohut, who had died of a brain aneurysm, and Mary Lu Zahalan replacing Rachel Paiement, who had moved to the west coast and married Jim Vallance. The album was strong and revitalized the band briefly. It included "Fond d'une bouteille", which was the French version of a song recorded on the ''Camouflage'' album, and "L'eloueze" which was written in Aymar's native Acadian dialect, and most poignantly "J'ai bien vécu", a tribute to band founder André Paiement, who died by suicide in 1978. Track listing # "Partons" # "Pauline" # "Au lac du Corbeau noir" # "Invisible" # "Mets tes gants" # "Je rêve de ta lumière" # "Fond d’une bouteille" # "L’éloueze des concessions" # "J’ai bien vécu" Personnel CANO: *Kermit - guest *Marcel Aymar - v ...
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Out On Television
Out may refer to: Arts, entertainment, and media Films * ''Out'' (1957 film), a documentary short about the Hungarian Revolution of 1956 * ''Out'' (1982 film), an American film directed by Eli Hollander * ''Out'' (2002 film), a Japanese film based on the novel by Natsuo Kirino and directed by Hideyuki Hirayama * ''Out'' (2013 film), a Canadian short comedy film directed by Jeremy LaLonde * ''Out'' (2017 film), a Slovak film directed by György Kristóf * ''Out'' (2020 film), an American animated film produced by Pixar Music * Out (jazz) or outside, an approach to jazz improvisation *OUT, a band produced by Adam Walton *''OUT'', a 1994 album by Nav Katze *'' Out (In Essence)'', a 1991 album by Fluke Television * ''Out'' (miniseries), a 1978 British television crime drama starring Tom Bell * "Out" (''Dark Angel''), a television episode Other uses in arts, entertainment, and media * ''Out'' (magazine), an LGBT fashion, entertainment, and lifestyle magazine * ''Out'' (novel), a 1 ...
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Visible (wireless Service)
Visible by Verizon (stylized as v˙s˙ble and also known simply as Visible) is an American mobile virtual network operator (MVNO) owned by Verizon Communications. Visible competes primarily against T-Mobile's Metro by T-Mobile, AT&T's Cricket Wireless and Dish's Boost Mobile as part of the prepaid wireless service provider brands. History Visible was launched by Verizon on May 10, 2018 without any prior announcement. At launch, the service was only available by invitation only, and at the time, required users to register via the Visible app or its website. Once registered, Visible would send users a SIM card the next day and once installed, can access the network. In addition, only unlocked phones were available to be used at launch. About Visible Visible is an all-digital wireless carrier in the United States, offering unlimited text, talk, data, and hotspot, on Verizon’s 4G LTE and 5G Networks. It is owned by Verizon and was founded in 2018. The service supports Apple a ...
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Transparency (other)
Transparency, transparence or transparent most often refer to: * Transparency (optics), the physical property of allowing the transmission of light through a material They may also refer to: Literal uses * Transparency (photography), a still, positive image created on a transparent base using photochemical means * Transparency (projection), a thin sheet of transparent material for use with an overhead projector * Electromagnetically induced transparency, an effect in which a medium that is normally opaque is caused to become temporarily transparent * Pentimento, an alteration in a painting, often revealed with growing transparency in paints with age Animals and plants * Transparent goby, a fish species of the family Gobiidae * White Transparent, a cultivar of apple which is usually used for cooking due to its sharp taste Arts, entertainment, and media Music Groups and labels * Transparency (record label), a North American music publisher * Transparent (band), a rock band from ...
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