P-wave

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Related to Pressure waves: compression wave

P-wave

 (pē′wāv′)
n.
A seismic wave that travels very quickly through the earth, causing the rocks it passes through to change in volume and their particles to vibrate parallel to the direction of wave propagation. P-waves can travel through solids, liquids, and gases.

[P(rimary) wave, since it is the first type of wave to be detected by a seismograph after a seismic event.]
References in periodicals archive ?
All new place objects must be able to withstand the pressure waves from passing freight trains at a speed of 140 km / h.
This affect is produced by using epi24's PleasureAir Technology -- air pressure waves that act as a suction to indirectly stimulate the clitoris.
The satellite study conducted by ICIMOD with agencies like Indian Space Research Organisation ( Isro), Space and Upper Atmosphere Research Commission( SUPARCO) of Pakistan, Chinese Academy of Sciences, NASA, University of Arizona, United States Agency for International Development( USAID), US Geological Survey, Japan Aerospace Exploration Agency, ESRI ( international supplier of GIS systems) and Digital Globe Disaster Charter, found that several villages in the Langtang valley were destroyed by air pressure waves sweeping down the slopes of the valley, landslides and avalanches in the aftermath of the earthquake.
Kalika's method of curing plantar fasciitis centers on the use of the Orthopulse Duolith which produces pressure waves (called "shockwaves") which penetrate foot tissues and stimulate processes that bring about relief, regeneration and healing (FDA approved Extracorporeal Shock Wave Therapy, or ESWT).
The second option for leak identification is the wave propagation method (Figure 3), which analyzes the pressure waves that result from a leak.
Yet sensory cells do react to pressure waves with frequencies below 100 Hz, as revealed by the fact that such signals actually evoke detectable micromechanical responses in nerve cells in the inner ear, as LMU neurobiologists now report in the journal Royal Society Open Science.
Smith's team focused 176 laser beams on hair-thin layers of gold and artificial diamond to induce pressure waves.
BAO directly descends from pressure waves (sound waves) moving through the early universe, when particles of light and matter were inextricably entangled; 380,000 years after the big bang, the universe had cooled enough for light to go free.
The reason for the Shamal wind is the formation of the seasonal low pressure waves centred over central and southern Pakistan and extend into the Arabian Gulf which lead to this winds we are facing called Albareh.
The pulsed laser causes tissue to heat and expand locally, generating pressure waves at the ultrasound frequency that can be picked up with a device called a transducer.
The washing machine effect was caused by pressure waves created by a flooded river surging into agitated seas.
The system utilises the latest scientific advances in pressure waves analysis.
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