lightnessˈlaɪt nɪs
lightness (n)
English Definitions:
elation, high spirits, lightness (noun)
a feeling of joy and pride
lightness, weightlessness (noun)
the property of being comparatively small in weight
"the lightness of balsa wood"
agility, legerity, lightness, lightsomeness, nimbleness (noun)
the gracefulness of a person or animal that is quick and nimble
lightness (noun)
having a light color
light, lightness (noun)
the visual effect of illumination on objects or scenes as created in pictures
"he could paint the lightest light and the darkest dark"
lightsomeness, lightness (noun)
the trait of being lighthearted and frivolous
Lightness
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".
Lightness
Lightness is a visual perception of the luminance ( L ) {\displaystyle (L)} of an 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. While luminance is a linear measurement of light, lightness is a linear prediction of the human perception of that light. This distinction is meaningful because human vision's lightness perception is non-linear relative to light. Doubling the quantity of light does not result in a doubling in perceived lightness, only a modest increase. The symbol for perceptual lightness is usually either J {\displaystyle J} as used in CIECAM02 or L ∗ {\displaystyle L^{*}} as used in CIELAB and CIELUV. L ∗ {\displaystyle L^{*}} ("Lstar") is not to be confused with L {\displaystyle L} as used for luminance. In some color ordering systems such as Munsell, Lightness is referenced as value. Chiaroscuro and Tenebrism both take advantage of dramatic contrasts of value to heighten drama in art. Artists may also employ shading, subtle manipulation of value.
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"lightness." Kamus.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.kamus.net/english/lightness>.
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