When a wave moves faster than the local speed of sound in a fluid, it is a shock wave. Like an ordinary wave, a shock wave carries energy and can propagate through a medium; however, it is characterized by an abrupt, nearly discontinuous change in pressure, temperature and density of the medium.
What is a shock wave in astronomy?
It is usually agreed that shocks caused by supernova remnants expanding in the interstellar medium accelerate the cosmic rays measured above the Earth's atmosphere. Shock waves in stellar environments, such as shocks inside a core collapse supernova explosion often become radiation mediated shocks.
What is a shock wave and how is it produced?
This phenomenon is known as a shock wave. Shock waves are also produced if the aircraft moves faster than the speed of sound. If a moving source of sound moves faster than sound, the source will always be ahead of the waves that it produces.
What is a shock wave therapy?
Extracorporeal shockwave therapy. Extracorporeal shockwave therapy (ESWT) is a treatment mostly used to treat kidney stones and in physical therapy and orthopedics.
How a sonic boom is formed?
A sonic boom is a loud sound kind of like an explosion. It's caused by shock waves created by any object that travels through the air faster than the speed of sound. Sonic booms create huge amounts of sound energy. When an object moves through the air, it makes pressure waves in front of and behind it.
What creates a bow wave?
Bow wave. Bow wave, progressive disturbance propagated through a fluid such as water or air as the result of displacement by the foremost point of an object moving through it at a speed greater than the speed of a wave moving across the water. See also wave motion.
What is a supersonic wave?
The edge of the cone forms a supersonic wave front with an unusually large amplitude called a "shock wave". When a shock wave reaches an observer a "sonic boom" is heard. [insert N-wave discussion] Unlike ordinary sound waves, the speed of a shock wave varies with its amplitude.
Is Shockwave safe?
Shockwave gets confused with Flash; they're related in a way but they're really two different things. In theory, like most software, Shockwave is safe as long as you keep it up to date. There are two tips that I have for keeping your computer safe while having Shockwave installed.
What is meant by Mach cone?
Definition of Mach cone. : the conical pressure wave front produced by a body moving at a speed greater than that of sound.
What is a normal shock?
"Normal shocks" are a fundamental type of shock wave. The waves, which are perpendicular to the flow, are called "normal" shocks. Normal shocks only happen when the flow is supersonic.
What is the wave drag?
In aeronautics, wave drag is a component of the aerodynamic drag on aircraft wings and fuselage, propeller blade tips and projectiles moving at transonic and supersonic speeds, due to the presence of shock waves. It is the sudden and dramatic rise of wave drag that leads to the concept of a sound barrier.
What is the use of Adobe Shockwave Player?
Adobe Shockwave Player (formerly Macromedia Shockwave Player) is a freeware software plug-in for viewing multimedia and video games in web pages, content created on the Adobe Shockwave platform. Content is developed with Adobe Director and published on the Internet.
What kind of wave is a shock wave from an earthquake?
Shock waves. When an earthquake occurs, it produces shock, or seismic, waves. Two kinds of shock waves can travel through Earth's interior: P (primary) and S (secondary). These waves travel in different ways and at different speeds.
What is the critical Mach number?
In aerodynamics, the critical Mach number (Mcr or M* ) of an aircraft is the lowest Mach number at which the airflow over some point of the aircraft reaches the speed of sound, but does not exceed it. At the lower critical Mach number, airflow around the entire aircraft is subsonic.
What is an oblique shock wave?
An oblique shock wave, unlike a normal shock, is inclined with respect to the incident upstream flow direction. It will occur when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses.
What is a shockwave in an earthquake?
The shifting rock in an earthquake causes shock waves—called seismic waves—to spread through the rock in all directions. In a great earthquake shocks may be felt by people thousands of miles or kilometers away from the center.
What is the definition of pressure wave?
Definition of pressure wave. : a wave (such as a sound wave) in which the propagated disturbance is a variation of pressure in a material medium — called also P-wave.
What is a sonic boom physics?
physics. 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.
What is meant by supersonic sound?
Originally, the word supersonic meant "having to do with sound waves beyond human hearing," but by 1934 it described movement exceeding the speed of sound, with ultrasonic taking on the old meaning. Sonic comes from the Latin sonus, or "sound."
What is the relationship between the frequency and the pitch of a sound?
A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave. Amazingly, many people, especially those who have been musically trained, are capable of detecting a difference in frequency between two separate sounds that is as little as 2 Hz.
How does the frequency affect sound?
An explanation of sound waves. The pitch of a sound is dictated by the frequency of the sound wave, while the loudness is dictated by the amplitude. When a drum is beaten, the air particles around the drum skin vibrate in the form of a compression wave.
What is the pitch of the sound?
Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale, or more commonly, pitch is the quality that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical melodies.