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Vroom (and variant spelling) is an onomatopoeia [1] that represents the sound of an engine revving up. [2] It also describes the act of purposefully operating a motor vehicle at high speeds so as to create loud engine noises. [3] The word is a common early childhood sound, and is used in speech therapy techniques.
The primary sources of jet noise for a high-speed air jet (meaning when the exhaust velocity exceeds about 100 m/s; 360 km/h; 225 mph) are "jet mixing noise" and, for supersonic flow, shock associated noise. Acoustic sources within the "jet pipe" also contribute to the noise, mainly at lower speeds, which include combustion noise, and sounds ...
different or interesting, exceptional; synonym for cool (short for "radical") [43] [56] [57] railroad tramway (obsolete) (v.) to coerce to convict with undue haste or with insufficient evidence the general term for the system of mass transit using trains running on rails: see usage of the terms railroad and railway (v.) to work on the railroad
Noise-generating aircraft propeller. Aircraft noise is noise pollution produced by an aircraft or its components, whether on the ground while parked such as auxiliary power units, while taxiing, on run-up from propeller and jet exhaust, during takeoff, underneath and lateral to departure and arrival paths, over-flying while en route, or during landing.
Silencer (silver) and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine—especially a noise-deadening device forming part of the exhaust system of an ...
The study made some strong remarks about the kind of people who would modify their car's exhaust. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
Noise pollution may have caused the death of certain species of whales that beached themselves after being exposed to the loud sound of military sonar. [70] (see also Marine mammals and sonar) Up until recently, most research on noise impacts has been focused on marine mammals, and to a lesser degree, fish.
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