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Lightness is a visual perception of the luminance of an object. It is often judged relative to a similarly lit object. It is often judged relative to a similarly lit object. In colorimetry and color appearance models , lightness is a prediction of how an illuminated color will appear to a standard observer.
Thesaurus Linguae Latinae. A modern english thesaurus. A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms ...
Lightness may refer to: Lightness, a property of a color; Lightness (philosophy), a philosophical concept most closely associated with continental philosophy and existentialism, which is used in ontology; A relatively low weight, mass or density of an object or material
Examples of common prefix adjectives can be seen in a list of color names and are described: Brightness: can describe either high luminosity or high saturation, according to the Helmholtz–Kohlrausch effect and/or Hunt effect. Lightness: describes both a high luminosity and low saturation; Darkness: the opposite of lightness, or low luminosity
Slipstream fiction has been described as "the fiction of strangeness", [6] or a form of writing that makes "the familiar strange or the strange familiar" through skepticism about elements of reality. [7] Illustrating this, prototypes of the style of slipstream are considered to exist in the stories of Franz Kafka and Jorge Luis Borges. [8]
As an example, if one uses a lens to form an image that is smaller than the source object, the luminous power is concentrated into a smaller area, meaning that the illuminance is higher at the image. The light at the image plane, however, fills a larger solid angle so the luminance comes out to be the same assuming there is no loss at the lens.
Aristotle's proscriptive analysis of tragedy, for example, as expressed in his Rhetoric and Poetics, saw it as having 6 parts (music, diction, plot, character, thought, and spectacle) working together in particular ways. Thus, Aristotle established one of the earliest delineations of the elements that define genre.
Lightness is a philosophical concept most closely associated with continental philosophy and existentialism, which is used in ontology. The term "lightness" varies in usage but is differentiated from physical weight, such as "the lightness of balsa wood". In other words, "light like a bird," as Paul Valéry wrote, "and not like a feather ...