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5 days ago · The boiling process and the resulting sounds have intrigued people since they were first observed, and they were the object of considerable research and calculation by the British physicists Osborne Reynolds and Lord Rayleigh, who applied the term cavitation to the process of formation of bubbles. Because an ultrasonic wave can be used ...
- Medical Applications
Ultrasonics - Medical, Imaging, Diagnosis: Although...
- Ranging and Navigating
Ultrasonics - Ranging, Navigating, Imaging: Sonar (sound...
- Ultrasonic Delay Line
Other articles where ultrasonic delay line is discussed:...
- Medical Applications
4 days ago · High-speed propellers often create tiny bubbles in the water, and this cavitation has a distinct sound. The sonar hydrophones may be towed behind the ship or submarine in order to reduce the effect of noise generated by the watercraft itself.
2 days ago · Historical Background. The study of sound speed dates back to ancient philosophers but was first accurately measured by Isaac Newton. He introduced the concept that sound speed depends on the medium's elasticity and density.
1 day ago · As the source approaches the speed of sound, the crests (which are areas of higher pressure because sound is a pressure wave) begin to pile up. An airplane traveling faster than the speed of sound creates constant shock waves of piled up pressure, which are heard as booms along its flight path.
5 days ago · Sonic boom, shock wave that is produced by an aircraft or other object flying at a speed equal to or exceeding the speed of sound and that is heard on the ground as a sound like a clap of thunder. When an aircraft travels at subsonic speed, the pressure disturbances, or sounds, that it generates.
- The Editors of Encyclopaedia Britannica
3 days ago · Spacecraft propulsion. A remote camera captures a close-up view of an RS-25 during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi. Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. In-space propulsion exclusively deals with propulsion systems used in the vacuum of ...
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1 day ago · Occurrence and production[edit] Xenon is a trace gas in Earth's atmosphere, occurring at a volume fraction of 87±1 nL/L ( parts per billion ), or approximately 1 part per 11.5 million. [60] It is also found as a component of gases emitted from some mineral springs.
