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Glossy
Gloss is an optical property which indicates how well a surface reflects light in a specular (mirror-like) direction. It is one of the important parameters that are used to describe the visual appearance of an object. Other categories of visual appearance related to the perception of regular or diffuse reflection and transmission of light have been organized under the concept of '' cesia'' in an order system with three variables, including gloss among the involved aspects. The factors that affect gloss are the refractive index of the material, the angle of incident light and the surface texture. Apparent gloss depends on the amount of ''specular'' reflection – light reflected from the surface in an equal amount and the symmetrical angle to the one of incoming light – in comparison with ''diffuse'' reflection – the amount of light scattered into other directions. Theory When light illuminates an object, it interacts with it in a number of ways: * Absorbed within it (large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optics
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of optical instruments, instruments that use or Photodetector, detect it. Optics usually describes the behaviour of visible light, visible, ultraviolet, and infrared light. Light is a type of electromagnetic radiation, and other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for by using the Classical electromagnetism, classical electromagnetic description of light, however complete electromagnetic descriptions of light are often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of Ray (optics), rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Appearance
The visual appearance of objects is given by the way in which they Reflection (physics), reflect and transmit light. The color of objects is determined by the parts of the spectrum of (incident white) light that are reflected or transmitted without being absorbed. Additional appearance attributes are based on the directional distribution of reflected (BRDF) or transmitted light (BTDF) described by attributes like Gloss (material appearance), glossy, shiny versus dull, matte, clear, turbidity, turbid, distinct, etc. Since "visual appearance" is a general concept that includes also various other visual phenomena, such as color, visual texture, visual perception of shape, size, etc., the specific aspects related to how humans see different ''spatial'' distributions of light (absorbed, transmitted and reflected, either regularly or diffusely) have been given the name ''Cesia (visual appearance), cesia''. It marks a difference (but also a relationship) with color, which could be defined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Light is a type of electromagnetic radiation, and other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for by using the classical electromagnetic description of light, however complete electromagnetic descriptions of light are often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Destructive Interference
In physics, interference is a phenomenon in which two coherent waves are combined by adding their intensities or displacements with due consideration for their phase difference. The resultant wave may have greater amplitude (constructive interference) or lower amplitude (destructive interference) if the two waves are in phase or out of phase, respectively. Interference effects can be observed with all types of waves, for example, light, radio, acoustic, surface water waves, gravity waves, or matter waves as well as in loudspeakers as electrical waves. Etymology The word ''interference'' is derived from the Latin words ''inter'' which means "between" and ''fere'' which means "hit or strike", and was used in the context of wave superposition by Thomas Young in 1801. Mechanisms The principle of superposition of waves states that when two or more propagating waves of the same type are incident on the same point, the resultant amplitude at that point is equal to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distinctness Of Image
Distinctness of image (DOI) is a quantification of the deviation of the direction of light propagation from the regular direction by scattering during transmission or reflection. DOI is sensitive to even subtle scattering effects; the more light is being scattered out of the regular direction the more the initially sharp (well defined) image is blurred (that is, small details are lost). In polluted air it is the sum of all particles of various dimensions (dust, aerosols, vapor, etc.) that induces haze.Fan, Charles H. "Validation of Orange Peel Measurement of Paint Appearance on Composite Substrates" General Motors Corporation DOI is measured to characterize the visual appearance of polished high- gloss surfaces such as automotive car finishes, mirrors, beyond the capabilities of gloss. Other appearance Appearance may refer to: * Visual appearance, the way in which objects reflect and transmit light * Human physical appearance, what someone looks like * ''Appearances'' (film), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Optical Topics ...
Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. A B C D E F G H I J K L M N O P Q R S T U W Z See also * :Optical components * :Optical materials References External links {{Index footer Index Optics Optics Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of optical instruments, instruments that use or Photodetector, detect it. Optics usually describes t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossmeter
A glossmeter (also gloss meter) is an instrument which is used to measure specular reflection Gloss (material appearance), gloss of a surface. Gloss (material appearance), Gloss is determined by projecting a beam of light at a fixed intensity and angle onto a surface and measuring the amount of reflected light at an equal but opposite angle. There are a number of different geometries available for gloss measurement, each being dependent on the type of surface to be measured. For non-metals such as coatings and plastics the amount of reflected light increases with a greater angle of illumination, as some of the light penetrates the surface material and is absorbed into it or diffusely scattered from it depending on its colour. Metals have a much higher reflection and are therefore less angularly dependent. Many international technical standards are available that define the method of use and specifications for different types of glossmeter used on various types of materials ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absence Of Bloom
Absence may refer to: Employment * Leave of absence, a period of time away from a job * Absenteeism, the habitual pattern of absence from work or duty * Absence rate, the ratio of workers with absences to total employees Sciences and philosophy * The (local) nonexistence of something * Absence of evidence, a concept in informal logic * Absence seizure, one of several kinds of seizures Arts and entertainment Music * The Absence (band), an American death metal band from Tampa, Florida * ''Absence'' (Dälek album), 2004 * ''Absence'' (Paper Route album), 2009 * ''The Absence'' (Luna Mortis album), 2009 * ''The Absence'' (Melody Gardot album), 2012 * ''Absence'' (Snowman album), 2011 * ''Absence'' (Terence Blanchard album), 2021 Other media * ''Absence'' (film), a 2014 Brazilian film * The Absence (1976 film), a Canadian drama film * ''The Absence'' (1992 film), a French-German-Spanish drama film * ''Absence'' (audio drama), a Big Finish Productions audio drama * ''Abs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contrast Gloss
Contrast may refer to: Science * Contrast (vision), the contradiction in form, colour and light between parts of an image * Contrast (statistics), a combination of averages whose coefficients add up to zero, or the difference between two means * Behavioral contrast, a phenomenon studied in psychology (behavior analysis) * Contrast agent, used to distinguish structures or fluids within a body, often shortened to just "contrast" Technology * Contrast ratio, a measure of a display system * Display contrast, of electronic visual displays Language * Contrast (linguistics), expressing distinctions between words * Contrast (literary), describing the difference(s) between two or more entities Arts and entertainment Music * The Contrast (band), an English pop band formed in 1999 * Contrast (music), the difference between parts or different instrumental sounds * High Contrast Lincoln Barrett (born 18 September 1979), better known by the stage name High Contrast, is a Welsh elect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheen
Sheen may refer to: Places * Sheen or West Sheen, an alternative name for Richmond, London, England ** East Sheen ** North Sheen ** Sheen Priory * Sheen, Staffordshire, a village and civil parish in the Staffordshire Moorlands, England * Sheenboro, Quebec, Canada, formerly Sheen Township and Sheen-Esher-Aberdeen-et-Malakoff United Township Municipality People with the given name * Sheen Kaaf Nizam (born 1947), Urdu poet and literary scholar * Sheen T. Kassouf (1929–2006), American economist Other uses * Sheen (surname) * The Venerable Servant of God Archbishop Fulton John Sheen, Catholic radio and TV personality, former Bishop of Rochester * Paint sheen, measure of specular reflected light (glossiness) from a paint finish * A thin layer of a substance (such as oil) spread on a solid or liquid surface and causing thin-film interference Thin-film interference is a natural phenomenon in which light waves reflected by the upper and lower boundaries of a thin film Interfere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
