what does p wave
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- P wave. A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.Share this page:1  Facebook. 2  Twitter. 3  Google. 4  Email. 5  Earthquakes. 6  Latest Earthquakes. 7  Real-time Feeds & Notifications. P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving. Share this page: 1  Facebook. 2  Twitter. 3  Google. 4  Email. 5  Earthquakes.
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- See information on P waves. Transverse Wave s. A transverse wave is a wave in which the motion of the medium is a right angles to the direction of the wave. A wave on a rope is a transverse wave. Light and other electromagnetic waves are also transverse waves.ongitudinal Waves. In a longitudinal wave, the motion of the medium is parallel to the direction of the wave. This means that the particles move left and right which in turn makes the other particles start to oscillate.
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- S waves, or secondary waves, are the waves directly following the P waves. S waves travel in the same direction, but instead of being a compressive wave, they oscillate with a shearing behavior at right angles to the direction of motion.
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- Two types of seismic wave exist, P-and S-waves. They are different in the way that they travel through the Earth. P-waves (P stands for primary) arrive at the detector first. They are longitudinal waves which mean the vibrations are along the same direction as the direction of travel.
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- P wave, the component of the cardiac cycle shown on an electrocardiogram as an inverted U-shaped curve that follows the T wave and precedes the QRS complex. It represents atrial depolarization. wave, the component of the cardiac cycle shown on an electrocardiogram as an inverted U-shaped curve that follows the T wave and precedes the QRS complex. It represents atrial depolarization.
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Earthquakes B) perpendicular. P waves are the fastest kind of seismic wave. A longitudinal P wave has the ability to move through solid rock and fluid rock, like water or the semi-liquid layers of the earth. It pushes and pulls the rock it moves through in the same way sound waves push and pull the air.
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Seismic monitoring There are two types of body waves emanating from a seismic event, P-waves and S-waves. P-waves are primary or compressional waves that alternately compress and expand the ground in the direction of the wave’s propagation. These waves can move through any material.
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- When an earthquake occurs, it releases energy in the form of seismic waves that radiate from the earthquake source in all directions. The different types of energy waves shake the ground in different ways and also travel through the earth at different velocities. The fastest wave, and therefore the first to arrive at a given location, is called the P wave. The P wave, or compressional wave, alternately compresses and expands material in the same direction it is traveling. The S wave is slower than the P wave and arrives next, shaking the ground up and down and back and forth perpendicular to the direction it is traveling. Surface waves follow the P and S waves.
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Seismic Waves and Earth's Interior P-waves are sound waves, it's just that in seismology we are interested in frequencies that are lower than humans' range of hearing (the speed of sound in air is about 0.3 km/sec). The vibration caused by P waves is a volume change, alternating from compression to expansion in the direction that the wave is traveling.
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P-wave medical Definition of P wave : a deflection in an electrocardiographic tracing that represents atrial activity of the heart — compare qrs complex, t wave Seen and Heard What made you want to look up P-wave? Please tell us where you read or heard it (including the quote, if possible).
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- Properties of Compressional or P waves. The first kind of body wave is the P wave. This is the fastest kind of seismic wave their name derives for the fact that P is an abbreviation for primary, first wave to arrive. The P wave generally travel at speeds between 1 and 14 km/sec. The P wave can move through solid rock and fluids, like water or the liquid layers of the earth.
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Seismic wave P and S waves in Earth's mantle and core [edit]. When an earthquake occurs, seismographs near the epicenter are able to record both P and S waves, but those at a greater distance no longer detect the high frequencies of the first S wave.eismic wave fields are recorded by a seismometer, hydrophone (in water), or accelerometer. The propagation velocity of the waves depends on density and elasticity of the medium. Velocity tends to increase with depth and ranges from approximately 2 to 8 km/s in the Earth's crust, up to 13 km/s in the deep mantle.
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What type of wave caused by an earhquake does the most above-ground damage?? S waves are transverse, like ripples on a pond. P waves are compressive, like sound waves. Both types can do a lot of damage when they reach the surface with sufficient energy. Which type does the most above-ground damage depends on the structure's vulnerability to each type. Long, flat structures, for example, tend to be less vulnerable to S waves than P waves.
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- P and S waves. A wave is a vibration that transfers energy from one place to another without transferring matter (solid, liquid or gas). Light and sound both travel in this way. Energy released during an earthquake travels in the form of waves around the Earth. Two types of seismic wave exist, P- and S-waves.
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P wave P wave, the component of the cardiac cycle shown on an electrocardiogram as an inverted U-shaped curve that follows the T wave and precedes the QRS complex. It represents atrial depolarization.
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P-wave In isotropic and homogeneous solids, the mode of propagation of a P-wave is always longitudinal; thus, the particles in the solid vibrate along the axis of propagation (the direction of motion) of the wave energy.ypical values for P-wave velocity in earthquakes are in the range 5 to 8 km/s. The precise speed varies according to the region of the Earth's interior, from less than 6 km/s in the Earth's crust to 13 km/s through the core.
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Earthquakes # P-Wave: These are called 'P' for Primary Wave. They are the ones that travel fastest and thereby are usually felt first. They are basically sound waves that travel thru the earth from the epicenter of an earthquake. Physics types know this as a longitudinal wave.
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How does the P-wave, the QRS complex, and the T-wave relate to the electrical and mechanical events of the cardiac cycle? P—wave : atrial depolarization (electrical activity) followed by atrial contraction (mechanical activity) Similarly, Q—wave: atrial septum depolarization. R— wave: ventricular muscles depolarization. S—wave: depolarization of cardiac muscles around ventricular base , near atrium and ventricular junction. T —wave : ventricular repolarization
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- P wave. 1. a longitudinal earthquake wave that travels through the interior of the earth and is usually the first conspicuous wave to be recorded by a seismograph. Also called primary wave. Compare L wave, S wave. The P wave is admitted to be the wave of auricular contraction. p wave.
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R wave P wave a positive deflection in the normal surface electrocardiogram produced by the wave of excitation passing over the atria; it represents atrial depolarization, an intrinsic atrial event. papillary wave (percussion wave) the chief ascending portion of the tracing of a sphygmograph.
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S Waves S Waves. S waves and P waves are the two types of seismic waves produced by all earthquakes. P waves are primary waves because they arrive at seismic reporting stations first. These shear waves are secondary waves because they travel at slightly slower speeds and are the second set of seismic waves recorded on seismographs.
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Electrical conduction system of the heart SA node: P wave. Under normal conditions, electrical activity is spontaneously generated by the SA node, the cardiac pacemaker. This electrical impulse is propagated throughout the right atrium, and through Bachmann's bundle to the left atrium, stimulating the myocardium of the atria to contract. The conduction of the electrical impulses throughout the atria is seen on the ECG as the P wave. As the electrical activity is spreading throughout the atria, it travels via specialized pathways, known as internodal tracts, from the SA node to the AV node. AV node and bundles: PR interval
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Electrocardiography P wave: The p-wave represents depolarization of the atria. Atrial depolarization spreads from the SA node towards the AV node, and from the right atrium to the left atrium. The p-wave is typically upright in most leads except for aVR; an unusual p-wave axis (inverted in other leads) can indicate an ectopic atrial pacemaker.
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Seismic Waves For seismic waves through the bulk material the longitudinal or compressional waves are called P waves (for primary waves) whereas the transverse waves are callled S waves (secondary waves). Since any material, solid or liquid (fluid) is subject to compression, the P waves can travel through any kind of material.
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P wave P wave. 1  the first complex of the electrocardiogram, during sinus and atrial rhythms, representing depolarization of the atria; if the P wave is retrograde or ectopic in axis or form, it is labeled P'. 2  Waveform in an electrocardiogram tracing representing atrial depolarization.