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Aberration (other)
An aberration is something that deviates from the normal way. Aberration may also refer to: Biology and medicine *Form (zoology) or aberration, a rare mutant butterfly or moth wing pattern *Cardiac aberrancy, aberration in the shape of the EKG signal * Chromosome aberration, abnormal number or structure of chromosomes Entertainment *''Aberration'', a DLC for the video game '' Ark: Survival Evolved'' * ''Aberration'' (film), a 1997 horror film * ''Aberration'' (EP), by Neurosis, 1989 *Aberrations, or abbies, human-like creatures in the American TV series ''Wayward Pines'' Optics and physics *Astronomical aberration, phenomenon wherein objects appear to move about their true positions in the sky *Chromatic aberration, failure of a lens to focus all colors on the same point *Defocus aberration, in which an image is out of focus *Optical aberration, an imperfection in image formation by an optical system *Relativistic aberration, the distortion of light at high velocities *Spheri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Form (zoology)
In zoology, the word "form" or "''forma''" (literally Latin for ''form'') is a strictly informal term that is sometimes used to describe organisms. Under the ''International Code of Zoological Nomenclature'' the term has no standing (it is not accepted). In other words, although form names are Latin, and are sometimes wrongly appended to a binomial name, in a zoological context, forms do not have much taxonomic significance. Usage of the term Some zoologists use the word "form" or "forma" to describe variation in animals, especially insects, as part of a series of terms and abbreviations that are appended to the binomen or trinomen. Many "typical specimens" may be described, but none should be considered absolute, unconditional or categorical. Forms have no official status, though they are sometimes useful in describing altitudinal or geographical clines. As opposed to morphs (see below), a subpopulation usually consists of a single form only at any given point of time. ;' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defocus Aberration
In optics, defocus is the aberration in which an image is simply out of focus. This aberration is familiar to anyone who has used a camera, videocamera, microscope, telescope, or binoculars. Optically, defocus refers to a translation of the focus along the optical axis away from the detection surface. In general, defocus reduces the sharpness and contrast of the image. What should be sharp, high-contrast edges in a scene become gradual transitions. Fine detail in the scene is blurred or even becomes invisible. Nearly all image-forming optical devices incorporate some form of focus adjustment to minimize defocus and maximize image quality. In optics and photography The degree of image blurring for a given amount of focus shift depends inversely on the lens f-number. Low f-numbers, such as to 2.8, are very sensitive to defocus and have very shallow depths of focus. High f-numbers, in the 16 to 32 range, are highly tolerant of defocus, and consequently have large depths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abomination (Bible)
Abomination () is an English term used to translate the Biblical Hebrew terms shiqquts and , which are derived from , or the terms , or (noun) or (verb). An abomination in English is that which is exceptionally loathsome, hateful, sinful, wicked, or vile. The term is translated ''abomination'' by almost all translations of the Bible. The similar words, , and , are almost exclusively used to refer to unclean animals. The common but slightly different Hebrew term, , is also translated as ''abomination'' in the Authorized King James Version, and sometimes in the New American Standard Bible. Many modern versions of the Bible (including the New International Version and New English Translation) translate it ''detestable''; the New American Bible translates it ''loathsome''. It is mainly used to denote idolatry; and in many other cases it refers to inherently evil things such as illicit sex, lying, murder, deceit, etc.; and for unclean foods. __TOC__ Analysis of the term Shi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberrancy (geometry)
Differential geometry of curves is the branch of geometry that deals with smooth curves in the plane and the Euclidean space by methods of differential and integral calculus. Many specific curves have been thoroughly investigated using the synthetic approach. Differential geometry takes another path: curves are represented in a parametrized form, and their geometric properties and various quantities associated with them, such as the curvature and the arc length, are expressed via derivatives and integrals using vector calculus. One of the most important tools used to analyze a curve is the Frenet frame, a moving frame that provides a coordinate system at each point of the curve that is "best adapted" to the curve near that point. The theory of curves is much simpler and narrower in scope than the theory of surfaces and its higher-dimensional generalizations because a regular curve in a Euclidean space has no intrinsic geometry. Any regular curve may be parametrized by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aberrant (role-playing Game)
''Aberrant'' is a superhero role-playing game published by White Wolf Game Studio in 1999, and is a sequel to the previously published science-fiction role-playing game ''Trinity'', and one of three games in the '' Trinity Universe'' line. Description Setting ''Aberrant'' is set on an alternate Earth, where in 1998, a nuclear-powered space station exploded, scattering clouds of radioactive dust over the planet. In the months and years that followed, thousands of people spontaneously manifested superhuman powers. Ten years later — the setting of the game — under the watchful eye Project Utopia, humans with superpowers are known as "novas". While peace and prosperity had been predicted as novas use their powers for good, signs are beginning to manifest that many novas have gone rogue, turned to evil or simply tender their powers to the highest bidder. The player characters can join the side of good and help the police, choose to join a terrorist organization, or remain in a gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spherical Aberration
In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces. This phenomenon commonly affects lenses and curved mirrors, as these components are often shaped in a spherical manner for ease of manufacturing. Light rays that strike a spherical surface off-centre are refracted or reflected more or less than those that strike close to the centre. This deviation reduces the quality of images produced by optical systems. The effect of spherical aberration was first identified in the 11th century by Ibn al-Haytham who discussed it in his work Kitāb al-Manāẓir. Overview A spherical lens has an aplanatic point (i.e., no spherical aberration) only at a lateral distance from the optical axis that equals the radius of the spherical surface divided by the index of refraction of the lens material. Spherical aberration makes the focus of telescopes and other instruments less than ideal. This is an important effect, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relativistic Aberration
In physics, relativistic aberration is the relativistic version of aberration of light, including relativistic corrections that become significant for observers who move with velocities close to the speed of light, as described by special relativity. Suppose, in the reference frame of the observer, the source is moving with speed at an angle relative to the vector from the observer to the source at the time when the light is emitted. Then the following formula, which was derived by Albert Einstein in 1905 using Lorentz transformations, describes the aberration of the light source, , measured by the observer:Albert Einstein (1905)''Zur Elektrodynamik bewegter Körper'', ''Annalen der Physik'' 17: 891English translationby George Barker Jeffery and Wilfrid Perrett (1923), in "The Principle Of Relativity", Dover, page 56. \cos \theta_o = \frac This expression can also be written in the form \tan\frac =\sqrt\tan\frac In this circumstance, the rays of light from the source which rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Aberration
In optics, aberration is a property of optical systems, such as Lens (optics), lenses and mirrors, that causes the ''image'' created by the optical system to not be a faithful reproduction of the ''object'' being observed. Aberrations cause the image formed by a lens to be blurred, distorted in shape or have color fringing or other effects not seen in the object, with the nature of the distortion depending on the type of aberration. Aberration can be defined as a departure of the performance of an optical system from the predictions of paraxial optics. In an imaging system, it occurs when light from one point of an object does not converge into (or does not diverge from) a single point after transmission through the system. Aberrations occur because the simple paraxial theory is not a completely accurate model of the effect of an optical system on light, rather than due to flaws in the optical elements. An image-forming optical system with aberration will produce an image which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromatic Aberration
In optics, chromatic aberration (CA), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing wavelength. Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing. Since the focal length of the lens varies with the color of the light different colors of light are brought to focus at different distances from the lens or with different levels of magnification. Chromatic aberration manifests itself as "fringes" of color along boundaries that separate dark and bright parts of the image. Types There are two types of chromatic aberration: ''axial'' (''longitudinal''), and ''transverse'' (''lateral''). Axial aberration occurs when different wavelengt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiac Aberrancy
Cardiac aberrancy is a type of disruption in the shape of the electrocardiogram signal, representing abnormal activation of the ventricular heart muscle via the electrical conduction system of the heart. Normal activation utilizes the bundle of His and Purkinje fibers to produce a narrow (QRS) electrical signal. Aberration occurs when the electrical activation of the heart, which is caused by a series of action potentials, is conducting improperly which can result in temporary changes in the morphology that looks like: * Left bundle branch block ** Left anterior fascicular block ** Left posterior fascicular block * Right bundle branch block This is in contrast to a permanent dysfunction of the electrical pathways that produces wide QRS complexes in one of the above patterns or combinations of patterns (ie, bifascicular block). In the context of atrial fibrillation, the Ashman phenomenon is a form of aberrancy. Aberrancy is due to prematurity in which part of the conductio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Aberration
In astronomy, aberration (also referred to as astronomical aberration, stellar aberration, or velocity aberration) is a phenomenon where celestial objects exhibit an apparent motion about their true positions based on the velocity of the observer: It causes objects to appear to be displaced towards the observer's direction of motion. The change in angle is of the order of where is the speed of light and the velocity of the observer. In the case of "stellar" or "annual" aberration, the apparent position of a star to an observer on Earth varies periodically over the course of a year as the Earth's velocity changes as it revolves around the Sun, by a maximum angle of approximately 20 arcseconds in right ascension or declination. The term ''aberration'' has historically been used to refer to a number of related phenomena concerning the propagation of light in moving bodies. Aberration is distinct from parallax, which is a change in the apparent position of a relatively nea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wayward Pines
''Wayward Pines'' is an American mystery science fiction television series based on the ''Wayward Pines'' novels by Blake Crouch. Developed for television by Chad Hodge, the pilot was directed by M. Night Shyamalan, with both as executive producers. The series premiered on Fox on May 14, 2015, and the first season concluded on July 23, 2015. On December 9, 2015, Fox renewed the series for a second season which aired from May 25 to July 27, 2016. The series was canceled in 2018. Premise In the first season, Ethan Burke is a U.S. Secret Service agent investigating the disappearance of two fellow agents in the mysterious small town of Wayward Pines, Idaho. Ethan awakens from a car accident unable to contact the outside world and unable to leave. He finds one of the agents dead and the other, his former lover Kate Hewson, settled down in the seemingly idyllic town. But the inhabitants of Wayward Pines are trapped there by an electrified fence and set of rules enforced by the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
