Definition, Meaning & Synonyms | English word OPACITY

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Definitions of OPACITY

1. (uncountable) The state or quality of being opaque, not allowing light to pass through
2. (uncountable) The state or quality of being inaccessible to understanding.
3. (optics, countable) A measure of relative impenetrability to electromagnetic radiation such as light.

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Examples of Using OPACITY in a Sentence

• Most alloys are metallic and show good electrical conductivity, ductility, opacity, and luster, and may have properties that differ from those of the pure elements such as increased strength or hardness.
• The basic operation used in digital compositing is known as alpha blending, where an opacity value, 'α', is used to control the proportions of two input pixel values that end up a single output pixel.
• In analytic philosophy and computer science, referential transparency and referential opacity are properties of linguistic constructions, and by extension of languages.
• The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity, and odor.
• The term is also used for all types of knitted fabric, and its thickness and weight is defined by denier or opacity.
• The final image will depend on the design and ink color of the printed image, the color and opacity of the paper to which the image is directly printed (plus any inclusions such as petals or fibers in that paper), and the color of the backing sheet.
• ; some general qualitative properties admit more specific related quantitative properties, such as in opacity, hardness, ductility, viscosity, etc.
• In the 1970s Alpert's conceptual and performance art included the performance sculpture Strategy for a Dance; the video works Post Time, A Circular Route, The Opacity of Order, and Facture; the article and collection South of the Slot; the printed works Women: On Our Way and Stretch; and the performances Hand Generated Light, Probe, Finger, and Sylph.
• By expanding and cooling slightly, the layer in the opacity bump becomes more opaque, absorbs more radiation, and heats up.
• The pelvic fins are large and angular, set forward of the pectoral fins, and are usually a translucent greyish-white colour, tending toward opacity in large fish.
• The final communication from the rover came on June 10, 2018 (sol 5111) from Perseverance Valley, and indicated a solar array energy production of 22 Watt-hours for the sol, and the highest atmospheric opacity (tau) ever measured on Mars: 10.
• Some cephalopods, such as the octopus and the cuttlefish, have specialized skin cells (chromatophores) that can change the apparent colour, opacity, and reflectiveness of their skin.
• The atmosphere's density and chemical composition can contribute to differences in colour, opacity (including haze) and the presence of clouds.
• The lower metallicity decreases the opacity of their outer layers and decreases the radiation pressure, resulting in a smaller, hotter star for a given mass.
• Radiodensity (or radiopacity) is opacity to the radio wave and X-ray portion of the electromagnetic spectrum: that is, the relative inability of those kinds of electromagnetic radiation to pass through a particular material.
• Then, magnified tomographic images of the emulsions, which correspond to the x-ray opacity maps of the specimen, are recorded using a light microscope or an electron microscope.
• The temperature drops until the wind opacity starts to decrease, meaning all LBV outbursts reach a temperature around 8,000–9,000 K.
• where E is a measure of the "effect of the exposure" that leads to changes in the opacity of the photosensitive material (in the same degree that an equal value of exposure H = It does in the reciprocity region), I is illuminance, t is exposure duration and p is the Schwarzschild coefficient.
• In the manufacturing and heavy industries, "bort" is used to describe dark, imperfectly formed or crystallized diamonds of varying levels of opacity.
• Early identification of lesions by radiography is not possible, but over time areas of radiographic opacity develop in association with the damaged bone.

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