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1 sonic boom
(a sudden loud noise heard when an aircraft which is travelling faster than the speed of sound passes overhead.) supersonic -
2 supersonic
[su:pə'sonik](faster than the speed of sound: These planes travel at supersonic speeds.) supersonic -
3 at
[æt]( showing)1) (position: They are not at home; She lives at 33 Forest Road) la, pe2) (direction: He looked at her; She shouted at the boys.) la3) (time: He arrived at ten o'clock; The children came at the sound of the bell.) la4) (state or occupation: The countries are at war; She is at work.) în; la5) (pace or speed: He drove at 120 kilometres per hour.) cu6) (cost: bread at $1.20 a loaf.) la, cu•- at all
См. также в других словарях:
Speed of sound — Sound is a vibration that travels through an elastic medium as a wave. The speed of sound describes how much distance such a wave travels in a certain amount of time. In SI Units with dry air at 20 °C (68 °F), the speed of sound is 343 m/s. This… … Wikipedia
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speed of sound — The speed at which the sound waves travel in a given medium. In the ISA (international standard atmosphere), sound travels at 761.6 mph (equivalent to 1116 ft/s, 340 m/s, 661.7 knots, 34,046.16 cm/s, or 1225.35 km/h). The speed of sound is… … Aviation dictionary
speed of sound — ▪ physics speed at which sound waves propagate through different materials. In particular, for dry air at a temperature of 0 °C (32 °F), the modern value for the speed of sound is 331.29 metres (1,086.9 feet) per second. The speed of sound… … Universalium
speed of sound — Synonyms and related words: Mach, Mach number, Mach one, Mach two, air speed, escape velocity, ground speed, knots, shock wave, sonic barrier, sonic boom, sonic speed, sonics, sound barrier, subsonic speed, subsonics, supersonic speed,… … Moby Thesaurus
speed of sound — The speed at which sound travels in a given medium under specified conditions. The speed of sound at sea level in the International Standard Atmosphere is 1108 ft/second, 658 knots, 1215 km/hour. See also hypersonic; sonic; subsonic; supersonic;… … Military dictionary
speed of sound — garso greitis statusas T sritis Standartizacija ir metrologija apibrėžtis Fazinis garso bangų sklidimo tampriojoje terpėje greitis: c = ω/k = λf; čia ω – kampinis dažnis, k – kampinis bangos skaičius, λ – bangos ilgis, f – virpesių dažnis.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
Speed Of Sound — In dry air, at 0° C (32° F), sound travels at 331.6 meters per second (1,088 feet per second). As the temperature increases, so does the speed of sound. See Mach, Hypersonic, Transonic and Subsonic … The writer's dictionary of science fiction, fantasy, horror and mythology