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The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn ), or 1 km in 2.91 s or one mile in 4.69 s.
ThrustSSC. Thrust SSC at the Coventry Transport Museum, where it is part of the permanent collection. ThrustSSC, Thrust SSC or Thrust SuperSonic Car is a British jet car developed by Richard Noble, Glynne Bowsher, Ron Ayers, and Jeremy Bliss. [ 1] Thrust SSC holds the world land speed record, set on 15 October 1997, and driven by Andy Green ...
This is a list of early pre-recorded sound and part or full talking feature films made in the United States and Europe during the transition to sound, between 1926 and 1929. [1] During this time a variety of recording systems were used, including sound on film formats such as Movietone and RCA Photophone , as well as sound on disc formats like ...
Concerto grosso. big concert. A Baroque form of concerto, with a group of solo instruments. Da capo aria. from the head aria. A three-section musical form. Dramma giocoso. jocular drama. A form of opera.
The sound source has now broken through the sound speed barrier, and is traveling at 1.4 times the speed of sound, c (Mach 1.4). Because the source is moving faster than the sound waves it creates, it actually leads the advancing wavefront. The sound source will pass by a stationary observer before the observer actually hears the sound it creates.
The speed of sound depends on the medium the waves pass through, and is a fundamental property of the material. The first significant effort towards measurement of the speed of sound was made by Isaac Newton. He believed the speed of sound in a particular substance was equal to the square root of the pressure acting on it divided by its density:
Detonation velocity. Explosive velocity, also known as detonation velocity or velocity of detonation (VoD), is the velocity at which the shock wave front travels through a detonated explosive. Explosive velocities are always faster than the local speed of sound in the material. If the explosive is confined before detonation, such as in an ...
Craig Breedlove (March 23, 1937 – April 4, 2023) was an American professional race car driver and a five-time world land speed record holder. He was the first person in history to reach 500 mph (800 km/h), and 600 mph (970 km/h), using several turbojet-powered vehicles, all named Spirit of America. [ 1]
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