discomfort glare rating, DGR. resembling or suggesting a spectrum or spectra. spectral. The Dictionary.com Word Of The Year For 2020 Is …. #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. Published by Houghton Mifflin Company. Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Specular Reflection Error Finding Function. Learn more. The spectralchain-rattling and moans gave me the chills. Discomfort glare is related to visual comfort where visibility is not necessarily impaired. But if the surface is wet, water can fill in the crevices and smooth out the surface. 2. of or relating to a spectrum. (Light-Scattering Spectroscopy, NCI Thesaurus/CDISC) of or relating to a specter; ghostly; phantom. discomfort glare. glare arising from specularly reflected light. The 500kg, five and a half metre diameter pendant is raised and lowered on a winching system from ETS. Why Do “Left” And “Right” Mean Liberal And Conservative? ... disability glare factor, DGF. Lens hood (Photo Credit : ID1974/ Shutterstock) A spectral summer painted itself upon the barren lilac bushes. • "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 If your language skills aren’t already top-notch, then this vocab quiz can get you up to speed! © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins JULIUS O. SMITH III Center for Computer Research in Music and Acoustics (CCRMA) Synonym: ghostly 1.2. SPECTRAL AUDIO SIGNAL PROCESSING. Specular reflection, or regular reflection, is the mirror-like reflection of waves, such as light, from a surface. Glare definition is - to shine with a harsh uncomfortably brilliant light. How to use glare in a sentence. distribution temperature of a light source. Ruth, unhappy as she felt, determined to discover the meaning of that spectral figure. spectral definition: 1. coming from or seeming to be the spirit of a dead person: 2. of the set of colours into which a…. Look it up now! The considerations discussed here are regarding discomfort glare. You may have heard of ghosts referred to as "specters": that means that they're spectral. discomfort glare. 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. Learn more. spectral meaning: 1. coming from or seeming to be the spirit of a dead person: 2. of the set of colours into which a…. A metric for color rendition using the spectral bands method was adopted by the CIE in 1948. (of a physical quantity) relating to a single wavelength of radiation. “Affect” vs. “Effect”: Use The Correct Word Every Time. Sensors 2020, 20(16), 4374; ... the “glare” in its physical definition (and not in a general all-inclusive sense) can instead affect results more than other causes in some specific but not infrequent conditions (darker regions contrast, proximity of bright patches Of, relating to, or produced by a spectrum. distal stimulus. This is at least the most common definition, leading to units of W/(sr cm 2 Hz). 1. of or like a spectre. 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. discomfort glare rating, DGR. But what exactly is the UGR value? Disabling glare, by definition, can result in reduced visual performance. ... Another definition of SC is the MPEG-7 spectral centroid. CIE (L*a*b*) uniform color space. 1859, Charles Dickens, The Haunted House: 1.1.1. CIE (L*a*b*) uniform color space. Filters can also be attached to reduce lens flare when shooting outside in bright conditions. 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! All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. A lower test result means a lens that will allow more light to pass through it. ... 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. 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. The haze can be reduced by shading the lens with a lens hood, which minimizes the glare. distribution temperature of a light source. The haze can be reduced by shading the lens with a lens hood, which minimizes the glare. 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 … CIE (L*u*v*) uniform color space. Use sunglasses to lessen glare. 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. CIE 1988 2° modified spectral luminous efficiency function for photopic vision. It is laid down in DIN EN 12464-1 as an obligatory measuring method with threshold values. Collins English Dictionary. 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. The information can be presented graphically or as a numerical table. Cambridge Dictionary +Plus Glare: Lighting entering the eye directly from luminaires or indirectly from reflective surfaces that causes visual discomfort or reduced visibility. 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. What do you have to bear in mind as a lighting designer? Normally a roadway would cause diffuse reflection due to its rough surface. 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 American Heritage® Stedman's Medical Dictionary 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. Lens hood (Photo Credit : ID1974/ Shutterstock) A starting point for evaluating glare … Antonym: nonspectral 1.3. Spectre definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. “Democrat” vs. “Republican”: Where Did The Parties Get Their Names? Normally a roadway would cause diffuse reflection due to its rough surface. distal stimulus. This spectral atlas contains a sample of the standard spectral type stars, peculiar stars, variable stars, and some special stars. Spectral Power Distribution (SPD): Describes the power emanating from a light source as a function of wavelength. UGR (Unified Glare Rating) serves to define the psychological glare (visual discomfort) of lighting installations in indoor spaces. “Capital” vs. “Capitol”: Do You Know Where You’re Going? Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. of some laser beam, is essentially its brightness per unit optical bandwidth. Specular glare refers to the presence of bright, reflected light sources, typically reflections from ceiling luminaires. physics (of a physical quantity) relating to a single wavelength of radiation spectral luminous efficiency. Of, or pertaining to, spectres; ghostly.quotations ▼ 1.1. 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.… Surgery is the common, effective way to treat more vision-impairing cataracts . Noun: 1. spectre - a ghostly appearing figure; "we were unprepared for the apparition that confronted us" spectral colours. The ultimate high definition vision of everything in sight. Spatial–Spectral Evidence of Glare Influence on Hyperspectral Acquisitions. discomfort glare factor. spectral luminous efficiency. Definition, Examples & History in Literature and Drama 7:24 Glare: Lighting entering the eye directly from luminaires or indirectly from reflective surfaces that causes visual discomfort or reduced visibility. Note: UWLR also meets the LEED version 4 definition of percent uplight. 4 Investigation of this concept continued through the 1950s, with the number of bands, their dividing wavelengths, and their relative weighting investigated by numerous researchers. We Asked, You Answered. 3. physics. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. Learn more. of or relating to a spectrum spectral colours. 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. Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021, Collins English Dictionary - Complete & Unabridged 2012 Digital Edition spectral definition: 1. coming from or seeming to be the spirit of a dead person: 2. of the set of colours into which a…. If your spirits need a boost, watch ‘Frasier’, Why the GOP Needs a Return to the Bush Leagues. Others give rise to delirum with spectral illusions or convulsions. (of a physical quantity) relating to a single wavelength of radiation. Agitated by a multitud… 2002 © HarperCollins Publishers 1995, 2002. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. How is it defined and used? https://medical-dictionary.thefreedictionary.com/specular+glare. The spectral brightness, e.g. Filters can also be attached to reduce lens flare when shooting outside in bright conditions. The following definitions are from IDA/IES MLO-2011. “That” vs. “Which”: When Do You Use Each? Describe 2020 In Just One Word? Spectral effects access the hidden world of audio signals - the spectral domain. When something is spectral, it has a ghostlike quality; it seems to vanish or disappear. A clairvoyante was turned on, but could only say that the spectral figures, which she described, “had no brains”. The glare is the result of the specular reflection of the beam of light from an oncoming car. discomfort glare factor. His career being theological, the events in it cannot be other than spectral. CIE 1988 2° modified spectral luminous efficiency function for photopic vision. 1.1. 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. What Does Amen Mean At The End Of A Prayer? if various wavelength pass through the lens material differently , the image will be out of focus. Keywords: LED lighting CIE, glare, visual comfort, spectral distribution, normative 1. ... disability glare factor, DGF. Spectral Quality Definitions. The glare is the result of the specular reflection of the beam of light from an oncoming car. Gaze at him with a spectral glare, As if they already stood aghast . At the bloody work they would look upon.' 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. The ultimate high definition vision of everything in sight. The following definitions are from IDA/IES MLO-2011. adjective ghostly, unearthly, eerie, supernatural, weird, phantom, shadowy, uncanny, spooky (informal), insubstantial, incorporeal, wraithlike the spectral quality of the light. But Kasich and Walker face competitive re-elections; their national presence is spectral, their national potential speculative. His brother Niles, also a psychiatrist, is, for a time, married to Maris, a spectral caricature who’s never seen on the show. CIE (L*u*v*) uniform color space. Spectral lines are produced by transitions of electrons within atoms or ions. You may recognize the spect part of the adjective spectral from words like "spectacle," "spectrum," and "spectacular." 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 Designing such tools is often very hard and in analogue devices it is generally impossible. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. 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 . Specular glare on the computer screen increases the time to read relatively easy text passages from the screen (Dugas-Garcia & Wierwille, 1985). spectral (comparative more spectral, superlative most spectral) 1. 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. The Most Surprisingly Serendipitous Words Of The Day. Spectral – a RIDI Group brand ... in addition the pendant was to house two high output high definition projection systems. Disclaimer. What is "glare"? Discomfort from specular glare occurs long before performance issues. ... 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