Where does shock wave occur?
Shock wave, strong pressure wave in any elastic medium such as air, water, or a solid substance, produced by supersonic aircraft, explosions, lightning, or other phenomena that create violent changes in pressure.
Under what conditions do shock waves occur?
Shock waves are narrow regions of air where pressure, temperature, and density characteristics are drastically different than surrounding areas. Shock waves occur when objects move faster than the speed of sound, which is 1,236 kilometers (768 miles) per hour.
Are shock waves transverse or longitudinal?
Longitudinal waves propogate by means of vibrations or disturbances in the medium that are in the same direction that the wave travels. Examples are sound (as above), seismic shock waves, slinky springs and part of the motion in ocean waves.
At what altitude can a sonic boom not be heard?
Sonic booms produced by aircraft flying supersonic at altitudes of less than 100 feet, creating between 20 and 144 pounds overpressure, have been experienced by humans without injury. Damage to eardrums can be expected when overpres- sures reach 720 pounds.
What is the difference between a longitudinal and transverse waves?
In longitudinal waves , the vibrations are parallel to the direction of wave travel. In transverse waves , the vibrations are at right angles to the direction of wave travel. Mechanical waves cause oscillations of particles in a solid, liquid or gas and must have a medium to travel through.
Can you feel a shockwave?
Most patients say it feels like small pulses against the skin. Each session will only last a few minutes, so the vast majority of patients are able to tolerate the levels of discomfort caused by shockwave therapy.
Why was shockwave killed?
Shockwave was downed by a hit from Optimus Prime himself when the Autobot leader led a back-up squadron of Autobots into battle. In another possible scenario, Megatron and his Decepticon squad were tricked into thinking that the Autobots were already dead, and strode into the Autobots’ base.