A lower test result means a lens that will allow more light to pass through it. distribution temperature of a light source. The data acquired from global radiation and direct radiation, together with specific spectral data help to determine the amount of gasses and aerosol particles in the air and also provide information on the photo-chemical formation of secondary impurities. Normally a roadway would cause diffuse reflection due to its rough surface. spectral luminous efficiency. The American Heritage® Stedman's Medical Dictionary Ruth, unhappy as she felt, determined to discover the meaning of that spectral figure. “Capital” vs. “Capitol”: Do You Know Where You’re Going? ... Spectral Control® Technology filters up to 96% of blue light, allowing only the beneficial and regulating turquoise blue light to pass through, to reduce blue blur and visible noise. Spectral lines are produced by transitions of electrons within atoms or ions. spectral colours. https://medical-dictionary.thefreedictionary.com/specular+glare. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. CIE 1988 2° modified spectral luminous efficiency function for photopic vision. Lens hood (Photo Credit : ID1974/ Shutterstock) Normally a roadway would cause diffuse reflection due to its rough surface. discomfort glare factor. (Light-Scattering Spectroscopy, NCI Thesaurus/CDISC) © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins if various wavelength pass through the lens material differently , the image will be out of focus. If your spirits need a boost, watch ‘Frasier’, Why the GOP Needs a Return to the Bush Leagues. Surgery is the common, effective way to treat more vision-impairing cataracts . How is it defined and used? Spectral Power Distribution (SPD): Describes the power emanating from a light source as a function of wavelength. Filters can also be attached to reduce lens flare when shooting outside in bright conditions. A type of spectroscopy that measures power spectral density of surface morphology by exploiting the tendency of light to disperse into a range of directions as a result of physical interaction. (of a physical quantity) relating to a single wavelength of radiation. UGR (Unified Glare Rating) serves to define the psychological glare (visual discomfort) of lighting installations in indoor spaces. discomfort glare. CIE (L*u*v*) uniform color space. An experimental apparatus (glare booth) was constructed to study the effect of spectral power distribution of light sources on discomfort glare (DG) perception and its visual mechanisms. The atlas is divided into pages for each spectral type, with each page containing a short description of the stellar type, characteristic spectral features, and a brief physical explantaion. 2. of or relating to a spectrum. The Dictionary.com Word Of The Year For 2020 Is …. 1.1. Glare: Lighting entering the eye directly from luminaires or indirectly from reflective surfaces that causes visual discomfort or reduced visibility. Spectral discomfort glare sensitivity was determined using ten young observers, requesting the observers to select medium glare settings of monochromatic radiations based on the de Boer glare rating scale, both at near‐foveal and 10° extra‐foveal directions of the 2° diameter glare source. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. JULIUS O. SMITH III Center for Computer Research in Music and Acoustics (CCRMA) Gaze at him with a spectral glare, As if they already stood aghast . Glare, also referred to as flare, is often defined as a Human Visual System (HSV) condition which causes a reduced capability to see details, due to an unsuitable distribution of luminance in the scene [1,2].Unfortunately, the term “glare” is used to refer both to the cause and to the effect of this phenomenon, as in the definition above which is a description of the effects, not of the cause. The ultimate high definition vision of everything in sight. This is at least the most common definition, leading to units of W/(sr cm 2 Hz). physics (of a physical quantity) relating to a single wavelength of radiation spectral luminous efficiency. You may recognize the spect part of the adjective spectral from words like "spectacle," "spectrum," and "spectacular." The haze can be reduced by shading the lens with a lens hood, which minimizes the glare. Eq.1) The function S ¯ x x (f) {\displaystyle {\bar {S}}_{xx}(f)} and the autocorrelation of x (t) {\displaystyle x(t)} form a Fourier transform pair, a result is known as Wiener–Khinchin theorem . Spectral Quality Definitions. Lens hood (Photo Credit : ID1974/ Shutterstock) A metric for color rendition using the spectral bands method was adopted by the CIE in 1948. spectral (comparative more spectral, superlative most spectral) 1. Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. #1 In Spectral Reflectance (glare) This test uses a spectrophotometer to measure the consistency of the light reflected off of the surface of a lens. His career being theological, the events in it cannot be other than spectral. When something is spectral, it has a ghostlike quality; it seems to vanish or disappear. 3. physics. His brother Niles, also a psychiatrist, is, for a time, married to Maris, a spectral caricature who’s never seen on the show. Describe 2020 In Just One Word? You may have heard of ghosts referred to as "specters": that means that they're spectral. The Most Surprisingly Serendipitous Words Of The Day. We Asked, You Answered. But Kasich and Walker face competitive re-elections; their national presence is spectral, their national potential speculative. Introduction A widely accepted definition of human comfort does not exist, but several metrics have been developed to quantify how much users appreciate environments, objects or interfaces. SPECTRAL AUDIO SIGNAL PROCESSING. ... Spectral Control® Technology filters up to 96% of blue light, allowing only the beneficial and regulating turquoise blue light to pass through, to reduce blue blur and visible noise. The spectralchain-rattling and moans gave me the chills. 2 : of, relating to, or made by a spectrum especially : relating to or derived from the electromagnetic spectrum of visible light Surfaces can differ in the proportion of incident light they reflect (dark ones … Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface. of some laser beam, is essentially its brightness per unit optical bandwidth. CIE (L*a*b*) uniform color space. (of a physical quantity) relating to a single wavelength of radiation. Discomfort glare is related to visual comfort where visibility is not necessarily impaired. 1859, Charles Dickens, The Haunted House: 1.1.1. Keywords: LED lighting CIE, glare, visual comfort, spectral distribution, normative 1. “Affect” vs. “Effect”: Use The Correct Word Every Time. of or relating to a specter; ghostly; phantom. If your language skills aren’t already top-notch, then this vocab quiz can get you up to speed! Use sunglasses to lessen glare. Spatial–Spectral Evidence of Glare Influence on Hyperspectral Acquisitions. Note: UWLR also meets the LEED version 4 definition of percent uplight. The spectral brightness, e.g. What do you have to bear in mind as a lighting designer? The glare is the result of the specular reflection of the beam of light from an oncoming car. Glare: Lighting entering the eye directly from luminaires or indirectly from reflective surfaces that causes visual discomfort or reduced visibility. Designing such tools is often very hard and in analogue devices it is generally impossible. Look it up now! A clairvoyante was turned on, but could only say that the spectral figures, which she described, “had no brains”. Published by Houghton Mifflin Company. ... Another definition of SC is the MPEG-7 spectral centroid. spectral. But if the surface is wet, water can fill in the crevices and smooth out the surface. This spectral atlas contains a sample of the standard spectral type stars, peculiar stars, variable stars, and some special stars. Noun: 1. spectre - a ghostly appearing figure; "we were unprepared for the apparition that confronted us" glare arising from specularly reflected light. Color Rendition (of objects): Effect of an illuminant on the color appearance of objects by conscious or subconscious comparison with their color appearance under a reference illuminant. Its spectral resolution is fairly coarse, as the various wavelengths of the visible spectrum are not individually distinguished and the overall reflectance in the entire visible portion is recorded. The glare is the result of the specular reflection of the beam of light from an oncoming car. The haze can be reduced by shading the lens with a lens hood, which minimizes the glare. Of, relating to, or produced by a spectrum. Agitated by a multitud… Spectral – a RIDI Group brand ... in addition the pendant was to house two high output high definition projection systems. The following definitions are from IDA/IES MLO-2011. Synonym: ghostly 1.2. Specular glare refers to the presence of bright, reflected light sources, typically reflections from ceiling luminaires. But what exactly is the UGR value? Learn more. Spectre definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. distribution temperature of a light source. adjective ghostly, unearthly, eerie, supernatural, weird, phantom, shadowy, uncanny, spooky (informal), insubstantial, incorporeal, wraithlike the spectral quality of the light. Disclaimer. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. • "Dictionary" definition: A harsh uncomfortably bright light ; especially: painfully bright sunlight • Glare occurs in two ways: – Too much light – Luminance range is too large • Effects of glare: – Photobiological damage: not considered here Filters can also be attached to reduce lens flare when shooting outside in bright conditions. Why Do “Left” And “Right” Mean Liberal And Conservative? These tools usually focus on pitch shifting, but there are many other marvellous things that the spectral domain lets us accomplish, and we are just getting started! ... disability glare factor, DGF. distal stimulus. Specular glare on the computer screen increases the time to read relatively easy text passages from the screen (Dugas-Garcia & Wierwille, 1985). Discomfort from specular glare occurs long before performance issues. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. ... disability glare factor, DGF. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. the act of a person who encloses something in or as if in a casing or covering, a school giving instruction in one or more of the fine or dramatic arts, a comic character, usually masked, dressed in multicolored, diamond-patterned tights, and carrying a wooden sword or magic wand, Dictionary.com Unabridged 2002 © HarperCollins Publishers 1995, 2002. “That” vs. “Which”: When Do You Use Each? As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.… It is laid down in DIN EN 12464-1 as an obligatory measuring method with threshold values. Learn more. Others give rise to delirum with spectral illusions or convulsions. discomfort glare rating, DGR. distal stimulus. Note: UWLR also meets the LEED version 4 definition of percent uplight. Here, brightness is usually understood what is more precisely called radiance, i.e., we actually have a spectral radiance. How to use glare in a sentence. A spectral summer painted itself upon the barren lilac bushes. But if the surface is wet, water can fill in the crevices and smooth out the surface. discomfort glare factor. Glare definition is - to shine with a harsh uncomfortably brilliant light. Cambridge Dictionary +Plus Glare Discomfort caused by excessive brightness of the light source, controlled by cutting off the light rays (as with louvred or recessed luminaires) so as to prevent the light source coming directly into the normal field of vision. Antonym: nonspectral 1.3. Definition, Examples & History in Literature and Drama 7:24 spectral definition: 1. coming from or seeming to be the spirit of a dead person: 2. of the set of colours into which a…. Collins English Dictionary. CIE 1988 2° modified spectral luminous efficiency function for photopic vision. Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Specular Reflection Error Finding Function. By shading the lens material differently, the webmaster 's page for free fun content, specular reflection Error function... Material differently, the image will be out of focus a roadway would cause reflection... Stood aghast, reflected light sources, typically reflections from ceiling luminaires Haunted house: 1.1.1 vs. “ ”. Medical dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company be reduced by shading the with. 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