释义 |
scattering
scat·ter·ing S0128400 (skăt′ər-ĭng)n.1. Something scattered, especially a small, irregularly occurring amount or quantity: a scattering of applause.2. Physics The dispersal of a beam of particles or of radiation into a range of directions as a result of physical interactions.adj. Placed irregularly and far apart; scattered. scat′ter·ing·ly adv.scattering (ˈskætərɪŋ) n1. a small amount2. (General Physics) physics the process in which particles, atoms, etc, are deflected as a result of collisionscat•ter•ing (ˈskæt ər ɪŋ) adj. 1. distributed or dispersing at irregular intervals. 2. (of votes) cast in small numbers for various candidates. n. 3. a small, scattered number or quantity. 4. Physics. the process in which a wave or beam of particles is diffused or deflected by collision with particles of the medium that it traverses. [1300–50] scat·ter·ing (skăt′ər-ĭng) The spreading of a stream of particles or a beam of rays, as of light, over a range of directions as a result of collisions with other particles. Scattering is responsible for the color of the sky. On a clear day, the sky is blue, because blue light from the sun is scattered by the atmosphere's particles to a greater degree than other colors of light. At sunset and sunrise, the sky appears red and yellow, because the light from the sun has passed a longer distance through air and some of the blue light has been scattered away, leaving yellow and red light which are less easily scattered.Scattering a sparse amount or number. See also scantling.Examples: scattering of affections, 1662; of good and evil, 1662; of learning; of nations, 1545; of pearls, 1908; of rays, 1866; of thoughts.ThesaurusNoun | 1. | scattering - a small number (of something) dispersed haphazardly; "the first scatterings of green"; "a sprinkling of grey at his temples"sprinklingsmall indefinite amount, small indefinite quantity - an indefinite quantity that is below average size or magnitude | | 2. | scattering - the physical process in which particles are deflected haphazardly as a result of collisionsextinction - the reduction of the intensity of radiation as a consequence of absorption and radiationnatural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity" | | 3. | scattering - a light shower that falls in some locations and not others nearbysprinkle, sprinklingrain shower, shower - a brief period of precipitation; "the game was interrupted by a brief shower" | | 4. | scattering - spreading widely or driving offdispersionDiaspora - the dispersion of the Jews outside Israel; from the destruction of the temple in Jerusalem in 587-86 BC when they were exiled to Babylonia up to the present timedissipation - breaking up and scattering by dispersion; "the dissipation of the mist"spread, spreading - process or result of distributing or extending over a wide expanse of space | | 5. | scattering - the act of scattering strewing, scatterspreading, spread - act of extending over a wider scope or expanse of space or time |
scatteringnoun sprinkling, few, handful, scatter, smattering, smatter the scattering of houses on the east of the villageTranslationsscatter (ˈskӕtə) verb1. to (make) go or rush in different directions. The sudden noise scattered the birds; The crowds scattered when the bomb exploded. (使)散開,驅散 使消散,驱散,散开 2. to throw loosely in different directions. The load from the overturned lorry was scattered over the road. 撒 撒ˈscattered adjective occasional; not close together. Scattered showers are forecast for this morning; The few houses in the valley are very scattered. 分散的 分散的ˈscattering noun a small amount scattered here and there. a scattering of sugar. 零零落落 零零落落ˈscatterbrain noun a forgetful or unreliable person. 健忘或不可靠的人 注意力不集中的人ˈscatterbrained adjective 健忘的 不专注的scattering
scatter about1. To strew, distribute, or disperse things all around (some place), especially in a haphazard or aimless manner. A noun or pronoun can be used between "scatter" and "about." I leaped into the pile of leaves and scattered them about. The cat jumped onto my desk and scattered about all my important documents. I scattered my grandmother's ashes about the field, as she instructed in her will.2. To separate and distribute rays of light in many different directions. A noun or pronoun can be used between "scatter" and "about." The crystal scatters the sunlight about in a myriad of colors. The gems in the cave scattered about the light from the flashlight.See also: scatterscatter around1. To strew, distribute, or disperse things all around (some place), especially in a haphazard or aimless manner. A noun or pronoun can be used between "scatter" and "around." I leaped into the pile of leaves and scattered them around. The cat jumped onto my desk and scattered around all my important documents. I scattered my grandmother's ashes around the field, as she instructed in her will.2. To separate and distribute rays of light in many different directions. A noun or pronoun can be used between "scatter" and "around." The crystal scatters the sunlight around in a myriad of colors. The gems in the cave scattered around the light from the flashlight.See also: around, scatterscattering
scattering 1. the random deflections suffered by light or other electromagnetic radiation passing through an irregular medium. If the source, medium, or observer are in relative motion, scintillations – random fluctuations of amplitude – may be seen as the source is observed through the medium: scattering in the Earth's atmosphere causes the stars to twinkle. Scintillations may only be seen if both the angular size of the source and the bandwidth in which the waves are received are small enough. Otherwise, the effect of the scattering may simply be to broaden the apparent angular size of the source. Scintillations of radio waves are observed to occur because of irregularities in the refractive index of the ionosphere, the interplanetary medium, and the interstellar medium giving ionospheric scintillation, interplanetary scintillation (IPS), and interstellar scintillation (ISS), respectively. IPS may be used in determining the angular sizes of radio sources at meter wavelengths in the range 0.1 to 2 arc seconds, or for measuring parameters of the solar wind. ISS cause some of the random fluctuations in the intensity of pulses received from pulsars. Light may be deflected from its direction of travel by fine particles of solid, gaseous, or liquid matter. For very small particles (less than one wavelength in size) the effect results from diffraction, reflection playing a more important part with increasing size; this is known as Rayleigh scattering and is very dependent on wavelength. Very small particles scatter blue light more strongly than red light. This leads to the reddening of starlight by cosmic dust and to the reddening of the Sun when seen through a thick layer of atmospheric dust. 2. the deflection of individual particles (such as electrons or photons) from their direction of travel as a result of their interaction with other particles, nuclei, atoms, or molecules in the medium through which they are passing. There are various scattering processes including Compton scattering.scattering[′skad·ə·riŋ] (electromagnetism) Diffusion of electromagnetic waves in a random manner by air masses in the upper atmosphere, permitting long-range reception, as in scatter propagation. Also known as radio scattering. (physics) The change in direction of a particle or photon because of a collision with another particle or a system. Diffusion of acoustic or electromagnetic waves caused by inhomogeneity or anisotropy of the transmitting medium. In general, causing a collection of entities to assume a less orderly arrangement. scattering
scattering [skat´er-ing] a change in the direction of motion of a photon or subatomic particle as the result of a collision or interaction.scattering Related to scattering: Rutherford scattering, Scattering cross section, Scattering of Light, Neutron scattering, Mie scatteringSynonyms for scatteringnoun sprinklingSynonyms- sprinkling
- few
- handful
- scatter
- smattering
- smatter
Synonyms for scatteringnoun a small number (of something) dispersed haphazardlySynonymsRelated Words- small indefinite amount
- small indefinite quantity
noun the physical process in which particles are deflected haphazardly as a result of collisionsRelated Words- extinction
- natural action
- natural process
- action
- activity
noun a light shower that falls in some locations and not others nearbySynonymsRelated Wordsnoun spreading widely or driving offSynonymsRelated Words- Diaspora
- dissipation
- spread
- spreading
noun the act of scatteringSynonymsRelated Words |