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Topic: Shock wave

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In the News (Tue 23 Jul 19)

  Shockwave Games ShockwaveFlashGames.Com. Shock wave games and free shock wave games that are online shock wave games.
Shock wave games and free shock wave games that are online shock wave games.
Atari - Atari games that are free atari games which are shock wave games.
Cartoon Network - Cartoon Network games and shock wave games which are free.
free-game.com /Shock_Wave_Games   (380 words)

  Shock Wave Technology - SANUWAVE, Inc.™
The shock wave created by the explosive evaporation of water is focused by an ellipsoid and finally releases its maximum energy at the 2nd focal point.
With this method, shock waves are generated on the basis of a principle similar to that used in loudspeakers.
Shock waves created on the basis of the piezoelectronic principle are generated by about a thousand piezoelectronic crystals arranged on the inside of a conical segment.
www.sanuwave.com /education/technology.asp   (374 words)

  Shock wave generator - Patent 5041121
A shock wave generator according to claim 1, wherein the converter further comprising a hollow-cylindrical receiving housing which surrounds the light guide and is freely opened at one end and has a carrier element which projects in the manner of a finger beyond the open housing end and is provided with said ionization surface means.
A shock wave generator according to claim 7, wherein at least a portion of the light guide is fastened in the receiving housing obliquely with respect to a central axis of the housing.
The shock wave generator according to the invention is therefore excellently suitable for the direct fragmentation of concrements by shock waves at points which are difficult to reach, such as urinary or renal calculi in the human body.
www.freepatentsonline.com /5041121.html   (1517 words)

 Shock wave
Shock waves are not sound waves; a shock wave takes the form of a very sharp change in the gas properties on the order of micro-meters in thickness.
This shock appears is generally generated by the interaction of two bodies of gas at different pressure, with a shock wave propagating into the lower pressure gas, and an expansion wave propagating into the higher pressure gas.
The shock is the result of the deceleration of the gas by a converging duct, or by the growth of the boundary layer on the wall of a parallel duct.
www.tagate.com /thunder/page/shockwave.shtml   (958 words)

 Shock wave Summary
Shock waves are characterized by a sudden change in the characteristics of the medium (such as pressure, temperature, or speed) as a positive step function.
A shock wave compression results in a loss of total pressure, meaning that it is a less efficient method of compressing gases for some purposes, for instance in the intake of a scramjet.
Shock waves are not sound waves; a shock wave takes the form of a very sharp change in the gas properties on the order of a few mean free paths (roughly micro-meters at atmospheric conditions) in thickness.
www.bookrags.com /Shock_wave   (2372 words)

 Extracorporeal Shock Wave Therapy ESWT for Heel Spurs and Plantar Fasciitis
Efficacy and safety of extracorporeal shock wave therapy (ESWT) were investigated in 36 patients with chronic lateral epicondylitis--9 patients receiving and 27 patients not receiving worker's compensation.
Shock wave therapy is quickly becoming a mainstay treatment for chronic recalcitrant plantar fasciitis, and many more applications for this therapy may exist.
The current study showed that the directed application of electrohydraulic-generated shock waves to the insertion of the plantar fascia onto the calcaneus is a safe and effective nonsurgical method for treating chronic, recalcitrant heel pain syndrome that has been present for at least 6 months and has been refractory to other commonly used nonoperative therapies.
heelspurs.com /eswt/index.html   (7414 words)

 shockwaves - scientific
Acoustical shock waves were introduced in medicine for kidney stone lithotripsy in the early 1980's.
Shock waves are the result of phenomena that create intense changes in pressure such as explosion, lightning, or supersonic aircraft.
The shock wave is then reflected from the inside wall of a metal ellipsoid to create a focal point of shock wave energy in the target tissue.
www.podlink.com /orthotrispy/shockwaves.htm   (1507 words)

 Shock Wave   (Site not responding. Last check: 2007-11-07)
Shock waves differ from sound waves in that the wave front, in which compression takes place, is a region of sudden and violent change in stress, density, and temperature.
In particular, shock waves travel faster than sound, and their speed increases as the amplitude is raised; but the intensity of a shock wave also decreases faster than does that of a sound wave, because some of the energy of the shock wave is expended to heat the medium in which it travels.
Shock waves alter the mechanical, electrical, and thermal properties of solids and, thus, can be used to study the equation of state (a relation between pressure, temperature, and volume) of any material.
abyss.uoregon.edu /~js/glossary/shock_wave.html   (275 words)

 Aerodynamics, Acoustics, Shock Waves Propagation
Shock waves are equivalent to acoustic waves in the limit of vanishing strength.
Wave propagation is limited by the walls, and is generally one-dimensional (except for those cases in which the walls interact elastically with the waves).
Acoustic waves propagate at a constant speed, and the flow of acoustic energy is independent of the duct section (contrary to the progagation of a blast).
aerodyn.org /HighSpeed/waves.html   (865 words)

 Oblique Shock Waves
Shock waves are very small regions in the gas where the gas properties change by a large amount.
Because a shock wave does no work, and there is no heat addition, the total enthalpy and the total temperature are constant.
But because the flow is non-isentropic, the total pressure downstream of the shock is always less than the total pressure upstream of the shock; there is a loss of total pressure associated with a shock wave.
www.grc.nasa.gov /WWW/K-12/airplane/oblique.html   (1061 words)

 Alert about side effects of shock wave lithotripsy   (Site not responding. Last check: 2007-11-07)
Mayo Clinic researchers are sounding an alert about side effects of shock wave lithotripsy: in a research study, they found this common treatment for kidney stones to significantly increase the risk for diabetes and hypertension later in life.
Risk for diabetes was related to the intensity of the treatment and quantity of the shock waves administered; hypertension was related to treatment of stones in both kidneys.
Shock wave lithotripsy uses shock waves to break up an impassable kidney stone into smaller, sandlike pieces which can be passed spontaneously, usually within a month.
www.news-medical.net /?id=17318   (819 words)

 Shock Wave
In the high-pressure shock tube shock waves are generated by filling the driver section with helium until the diaphragm separating the driver and driven sections ruptures.
When the shock wave reaches the end of the driven section it is reflected and travels back towards the driver section and causes a second heating event.
The time taken to alter the properties from those ahead of the shock wave to those behind the shock wave is approximately the time it takes for the head of the shock wave to traverse a distance equivalent to the thickness of the shock front i.e.
tigger.uic.edu /~kenbrez/html/shock_wave.html   (271 words)

 Shock wave - Memory Alpha, the Star Trek Wiki
The subspace shock wave from the explosion of Praxis
A shock wave is any compressional wave of energy or matter caused by the shock of an explosion that travels through a surrounding medium.
In 2293, a massive subspace shock wave was caused by an explosion on the Klingon moon Praxis.
memory-alpha.org /en/wiki/Shockwave   (228 words)

 Shocking Evidence for Cosmic Rays Found - Space - RedOrbit   (Site not responding. Last check: 2007-11-07)
The report by Hughes and colleagues demonstrates that the shock wave produced by the explosive disruption of the star behaves in a way that cannot be explained by the standard theory.
These shock waves, analogous to the sonic boom produced by supersonic motion of an airplanes, produce sudden, large changes in pressure, and temperature behind the wave.
A large component of cosmic ray nuclei alters the dynamics of the shock wave, and may require changing the way that astronomers estimate the explosive energy of a supernova from the properties of its remnant.
www.redorbit.com /news/space/249363/shocking_evidence_for_cosmic_rays_found/index.html   (704 words)

 shock wave therapy | extracorporeal shock wave therapy
The effectiveness of extracorporeal shock wave therapy was recently described in a paper presented at the Annual Meeting of the American College of Foot and Ankle Surgeons in New Orleans on February 8, 2001 (http://www.acfas.org/prshckwavthera.
Amazingly, normal-weight and moderately obese patients reported that their chronic-plantar-fasciitis pain had dropped to zero the day after shock wave therapy (pain was rated on a scale from zero to five, with five representing the most intense-possible discomfort), and even severely obese individuals detected a drop-off in pain.
Not surprisingly, extracorporeal shock wave therapy has also been used to treat tennis players suffering from tennis elbow, a condition in which the elbow of the arm holding the racquet becomes inflamed, painful, and stiff.
www.sportsinjurybulletin.com /archive/1048-shock-wave-therapy.htm   (1193 words)

 Shock Waves
The speed of a shock wave is always greater than the speed of sound in the fluid and decreases as the amplitude of the wave decreases.
The shock wave from a supersonic object is a cone composed of overlapping spherical wavefronts.
At transonic speeds the shock wave is a wall of high pressure moving with the object, perpendicular to its velocity.
hypertextbook.com /physics/waves/shock   (674 words)

 SPACE.com -- Supernova Shock Wave Captivates Astronomers
A sequence of colorful images detailing a stellar explosion in another galaxy show a supernova's massive, morphing shock wave, providing scientists with a case study in the structure and evolution of the events.
The implosion generated an enormous shock wave that zoomed to the surface of the star and broke through on March 28, 1993.
Researchers don't know why they occur, but Bartel thinks the shock wave may be catching up with knots of other material blown off the star thousands of years before it exploded.
www.space.com /scienceastronomy/astronomy/supernovae_000106.html   (720 words)

 Shock Wave - Search Results - MSN Encarta
Shock Wave - Search Results - MSN Encarta
Shock Wave, compression wave that is produced by a sudden change in pressure and particle velocity, such as an explosion, or by a body moving faster...
- wave of heat and air pressure: a wave of increased temperature or pressure as a result of an explosion or earthquake or the movement of a supersonic body
encarta.msn.com /Shock_Wave.html   (172 words)

 Shock waves tune light TRN 060403
The shock wave light-shift effect could be used to convert lightwaves generated by inexpensive light sources to frequencies carried more efficiently by optical fibers.
The shock wave efficiently narrows the bandwidth of the spectrum of light, an unusual effect that is potentially useful for harvesting solar energy, said Reed.
The frequency-shifting and bandwidth-narrowing effects are largely independent of the speed, shape and thickness of the shock wave, according to the researchers.
www.trnmag.com /Stories/2003/060403/Shock_waves_tune_light_060403.html   (668 words)

 Shock Wave Therapy | BunionBusters.com
During the treatment, shock waves are focused on the point of maximal tenderness on the heel as it is bombarded with high intensity sound waves.
The theory is that the sound waves break up the scar tissue and inflammation, which allows normal healing tissue to repair the injury and alleviate the pain.
Shock wave therapy is not for everyone and should not be used on people with bleeding problems, those taking medication that interfere with blood clotting, or for children or pregnant women.
www.bunionbusters.com /services/shockwave.asp   (516 words)

 Healthcare Professionals - Shock Wave Therapy
Shock wave therapy was first used in Germany and Eastern Europe by orthopaedic surgeons to treat non-union fractures.
Clinical evaluation of the Orthospec Shock Wave Therapy equipment was carried out in 7 locations in 3 countries treating over 200 patients with a variety of soft tissue chronic pain conditions lasting over 6 months and that had not responded to conservative treatments.
Shock wave therapy may be used to treat a wide range of conditions including Achillodynia, Patella tendonitis.
www.genmedhealth.com /main/shockwave.html   (467 words)

 Solar Shock Wave Events
This shock wave should not affect the stock markets on Jan 30, 2002 as the distance between the Sun and Neptune would be to great, from Earth's line of sight perspective, for the shock wave to continue hitting the Earth.
The widths of the arc shaped shock waves that spawn the radio signals from the planets vary widely depending on which planet the shock wave originated from, though the signals from all the planets are quite similar.
The shock wave from Mercury is 5 percent that of the Earth's, this is due to the weaker magnetic field of Mercury and the smaller size of the planet.
www.superforce.com /shock-wave.htm   (1079 words)

If the SHOCK wave is strong enough it can also injure or kill directly (no schrapnel), or make the person a large piece of schrapnel.
SHOCK waves slightly change the speed of sound to be a little FASTER than the nieghboring air.
Visually pretend a shock wave is the FRONT bumper of a car, if there is any other sounds near the trunk they will rush up to and eventually catch up to the backside of the FRONT bumper.
www.makeitlouder.com /document_bombshockwaveestimation.html   (4492 words)

 Shock Wave Therapy Can Help Promote Bone Healing and Reduce Pain - TheHorse.com
Shock wave therapy is a treatment that is increasingly used by veterinarians to treat orthopedic problems such as bone fractures and navicular disease.
Contrary to what its name implies, shock wave therapy does not use electrical pulses, but rather high-energy acoustic pulses, much like sound waves, that have the ability to travel readily through soft tissues to effect hard material and tissues such as mineralized deposits or bone.
Shock wave therapy was originally used in veterinary medicine to break up kidney stones.
www.thehorse.com /viewarticle.aspx?ID=4885   (688 words)

 Normal Shock Wave Equations
Shock waves are generated which are very small regions in the gas where the gas properties change by a large amount.
If the shock wave is perpendicular to the flow direction it is called a normal shock.
The equations describing normal shocks were published in a NACA report (NACA-1135) in 1951.
www.grc.nasa.gov /WWW/K-12/airplane/normal.html   (860 words)

 WSU Institute for Shock Physics   (Site not responding. Last check: 2007-11-07)
Chemistry and the School of Mechanical and Materials Engineering, also participate in shock wave research.
Shock physics is a field aimed toward studying the effects on a given object under intense, immediate pressure.
For example, when a meteor slams into a hillside, our scientists would be interested on what changed due to the extreme conditions caused by that specific shock wave.
www.shock.wsu.edu /research.html   (444 words)

 NASA - NASA Dryden Fact Sheets - Schlieren Photography: Ground to Air
He successfully took a picture which clearly shows the shock waves about a T-38 aircraft on December 13, 1993 at Wallops Island, Md. The camera was then brought to the NASA Dryden Flight Research Center because of the high number of supersonic flights there.
At supersonic speeds, an aircraft generates numerous shock waves that emanate from major components, such as the nose, canopy, inlets, wings, and vertical tails.
These multiple shock waves tend to merge into a strong bow shock and a strong tail shock as they propagate through the atmosphere.
www.nasa.gov /centers/dryden/news/FactSheets/FS-033-DFRC.html   (1029 words)

 Shockwave Games. Shock wave games and free shock wave games that are online shock wave games.
Shock wave games and free shock wave games that are online shock wave games.
Atari - Atari games that are free atari games which are shock wave games.
Cartoon Network - Cartoon Network games and shock wave games which are free shock wave games.
www.shockwaveflashgames.com   (370 words)

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