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Topic: Longitudinal wave

Related Topics

Transverse wave

Surface wave

Waveform

Sound

Diffraction

Refraction

Light

Acoustics

Reflection (physics)

Oscillation

Wardenclyffe Tower

Acoustical engineering

Earthquake

Telluric current

Architectural acoustics

	Longitudinal wave - Wikipedia, the free encyclopedia
		Longitudinal waves, also referred to as compressional waves or pressure waves, are waves that have vibrations along or parallel to their direction of travel.
		For sound waves, the amplitude of the wave is the difference between the pressure of the undisturbed air and the maximum pressure caused by the wave.
		Ion acoustic wave : longitudinal oscillation of the ions (and the electrons) in an unmagnetized plasma or in a magnetized plasma parallel to the magnetic field.
	en.wikipedia.org /wiki/Longitudinal_wave (819 words)

	Transverse and Longitudinal Waves (Site not responding. Last check: 2007-10-08)
		For transverse waves the displacement of the medium is perpendicular to the direction of propagation of the wave.
		In longitudinal waves the displacement of the medium is parallel to the propagation of the wave.
		The air motion which accompanies the passage of the sound wave will be back and forth in the direction of the propagation of the sound, a characteristic of longitudinal waves.
	hyperphysics.phy-astr.gsu.edu /hbase/sound/tralon.html (282 words)

	The Physics Classroom
		One way to categorize waves is on the basis of the direction of movement of the individual particles of the medium relative to the direction which the waves travel.
		While waves which travel within the depths of the ocean are longitudinal waves, the waves which travel along the surface of the oceans are referred to as surface waves.
		In longitudinal and transverse waves, all the particles in the entire bulk of the medium move in a parallel and a perpendicular direction (respectively) relative to the direction of energy transport.
	www.physicsclassroom.com /Class/waves/u10l1c.html#emmech (1558 words)

	Waves and Wave Motion
		In a longitudinal wave, the particles are disturbed in a direction parallel to the direction that the wave propagates.
		Sound waves are examples of longitudinal waves: the individual particles (air molecules) vibrate back and forth in the direction that the sound is traveling.
		As indicated in the figure, the amplitude (A) of the wave is the maximum displacement of a particle from its equilibrium position — or the height of the wave.
	www.visionlearning.com /library/module_viewer.php?mid=102&l=&c3= (1443 words)

	Sound is a Longitudinal Wave
		Longitudinal waves are waves in which the motion of the individual particles of the medium is in a direction which is parallel to the direction of energy transport.
		Sound waves are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction which the sound moves.
		And the essential characteristic of a longitudinal wave which distinguishes it from other types of waves is that the particles of the medium move in a direction parallel to the direction of energy transport.
	www.glenbrook.k12.il.us /gbssci/phys/Class/sound/u11l1b.html (490 words)

	[No title]
		The human body cells use both scalar electrical and magnetic longitudinal waves and holographic vortex energy patterns to communicate between cells and to form the body cells and overall body and organ phenotypes patterns and forms by means of a aura, and spiritual holographic energy vortex memory form.
		Longitudinal sound waves may also be used to approximate electrical and magnetic longitudinal scalar waves to also be used as force fields that may not harm devices that use em herzian waves.
		Emf waves and cell phones also produce scalar waves as a side effect, and scalar waves may be somewhat jammed by using a role of aluminum foil rolled up much like a tesla coil to slow them down and trap them as emf energy in the center of the role of foil.
	www.rhfweb.com /ssw.html (1554 words)

	P Wave Animation (Site not responding. Last check: 2007-10-08)
		P waves are the fastest body waves and arrive before the S waves, or secondary waves.
		The P waves carry energy through the Earth as longitudinal waves, moving particles in the same line as the direction of the wave.
		P waves are generally felt by humans as a bang or thump.
	mceer.buffalo.edu /infoService/faqs/pwaveanim2.html (94 words)

	SLINKY WAVE MODELS (Site not responding. Last check: 2007-10-08)
		This wave is called a transverse wave because the motion of the slinky is sideways to the motion along the slinky.
		This wave is a wave of motion back and forth along the slinky which travels along the slinky, because the back and forth motion is in the same line as the direction of motion this is called a longitudinal wave.
		The longitudinal wave is a model for sound waves in gases and liquids as well as for seismic P waves.
	www.exploratorium.edu /covis/earthquake/e-demos/slinky-waves.html (557 words)

	The Physics Classroom
		In a transverse wave, particles of the medium are displaced in a direction perpendicular to the direction of energy transport.
		In a longitudinal wave, particles of the medium are displaced in a direction parallel to energy transport.
		In this type of wave - a longitudinal wave - the particles of the medium move in a direction parallel to the direction of energy transport.
	www.physicsclassroom.com /mmedia/waves/lw.html (245 words)

	The Tom Bearden Website
		As the peak and trough of the wave passes, it is as if we had a force pressing against the spinning electron, first along the line of wave travel, and then antiparallel to the wave travel.
		Longitudinal scalar waves in vacuum normally contain many spinning vortex "holes" of flux, created from the spinning electrons which launched the wave and stayed behind in the transmitting antenna.
		This kind of longitudinal wave is directly detectable by a normal free electron charged gas in a receiving antenna or probe.
	www.cheniere.org /books/part4/s28.htm (635 words)

	Luminiferous aether - Wikipedia, the free encyclopedia
		However, longitudinal waves by necessity have only one form for a given propagation direction, rather than two polarizations as in a transverse wave, and thus they were unable to explain the phenomenon of birefringence (where two polarizations of light are refracted differently by a crystal).
		However a transverse wave apparently required the propagating medium to behave as a solid, as opposed to a gas or fluid.
		The speed of propagation for mechanical waves, the speed of sound, is defined by the mechanical properties of the medium.
	www.sciencedaily.com /encyclopedia/luminiferous_aether (3742 words)

	What's ultrasonic test?
		These include longitudinal waves (wherein the particles in the solid material vibrate in the direction of wave propagation) and transverse waves (wherein the particles in the solid material vibrate perpendicular to the direction of wave propagation).
		For longitudinal wave propagation in a perpendicular direction, if the particle displacements of the wave are in the direction of propagation of the wave, the mode is called a pure mode, and the wave is referred to as a pure longitudinal wave.
		Otherwise the wave propagation mode is called a quasi-mode, and the wave is referred as a quasi-longitudinal wave.
	web.nmsu.edu /~prokop/hpa/ultra.htm (313 words)

	Physics in steelmaking. Loud but clear. Sound waves. (Site not responding. Last check: 2007-10-08)
		The wave on the rope is an example of a transverse wave.
		In a transverse wave the medium (in this case, the rope) moves at a right angle to the direction of the wave.
		Other examples of transverse waves are waves on the sea and light waves, which are carried by changing electric and magnetic fields.
	www.schoolscience.co.uk /content/4/physics/corus/sound/psch1pg1.html (374 words)

	The Longitudinal Wave
		If the confine within which ultrasound is traveling, has opposing surfaces shaped such that the wave is reflected of one surface to the other; sound can hum between the walls for a long time.
		It is affected by the type and density of the medium propagating the wave.
		The further the wave is down into the audible and infra spectrum, the stronger the effects of b.
	www.hexamite.com /he660t1.htm (431 words)

	Longitudinal and Transverse Wave Motion (Site not responding. Last check: 2007-10-08)
		Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium.
		In a longitudinal wave the particle displacement is parallel to the direction of wave propagation.
		The wave is seen as the motion of the compressed region (ie, it is a pressure wave), which moves from left to right.
	www.kettering.edu /~drussell/Demos/waves/wavemotion.html (528 words)

	Longitudinal Waves -1 (Site not responding. Last check: 2007-10-08)
		Waves are vibratory disturbances travelling in a medium.
		You would always have layers maintaining the same distance between themselves and you would not have any wave disturbance traveling in the medium.
		The key to understanding of wave motion is this simple idea that phase is different for the different vibrating particles because they start vibrating at different times.
	surendranath.tripod.com /Applets/Waves/Lwave01/Lwave01Applet.html (184 words)

	Longitudinal Wave 2, VRML (Site not responding. Last check: 2007-10-08)
		With a longitudinal wave the motion of the medium, often called the disturbance, is moving parallel to the motion of the wave.
		This is the central concept to the definition of a longitudinal wave.
		A longitudinal wave is a wave with the motion of the medium being parallel to the motion of the wave.
	id.mind.net /~zona/mstm/physics/waves/transLongWaves/longidudinalWave2VRML.htm (353 words)

	Introduction to Waves (Site not responding. Last check: 2007-10-08)
		The medium through which the wave travels may experience some local oscillations as the wave passes, but the particles in the medium to not travel with the wave.
		However, none of the individual people the stadium are carried around with the wave as it travels - they all remain at their seats.
		As the wave passes through, the particles in the air oscillate back and forth about their equilibrium positions but it is the disturbance which travels, not the individual particles in the medium.
	www.kettering.edu /~drussell/Demos/waves-intro/waves-intro.html (289 words)

	longitudinal wave -- Encyclopædia Britannica
		wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave.
		A coiled spring that is compressed at one end experiences a wave of compression that travels its length, followed by a stretching; a point on any coil of the spring will move with the wave and return along the same path, passing through the neutral...
		In the case of waves moving in the same direction, interference produces a travelling wave; for oppositely moving waves,...
	www.britannica.com /eb/article-9048885?tocId=9048885 (842 words)

	Waves
		The motion of the medium is parallel to the direction the wave is moving.
		Wave speed depends on the medium in which it travels.
		In a given medium, the speed of a wave is constant.
	www.bayhicoach.com /pwave.htm (1169 words)

	ipedia.com: Luminiferous aether Article (Site not responding. Last check: 2007-10-08)
		In the late 19th century the luminiferous aether ("light-bearing aether"), or ether, was postulated to be the medium for the propagation of light.
		In order to account for the absence of longitudinal waves, Cauchy suggested that the aether had negative compressibility; but Green pointed out that such a fluid would be unstable.
		By analogy to mechanical waves, physicists assumed that electromagnetic waves required a medium for propagation, and hypothesized the aether.
	www.ipedia.com /luminiferous_aether.html (1107 words)

	Longitudinal - Wikipedia, the free encyclopedia
		The term, longitudinal means "front-to-back" or "top-to-bottom" as opposed to transverse or latitudinal which mean "side-to-side".
		In automotive engineering, a longitudinal engine is an engine in which the crankshaft is oriented along the long axis of the vehicle, front to back.
		This is a disambiguation page: a list of articles associated with the same title.
	en.wikipedia.org /wiki/Longitudinal (114 words)

	Scalar Wave Detector
		For convenience we represent normal linearized vacuum (spacetime) as a horizontal or longitudinal vector (Figure 4), implying the direction of motion of the wave in the laboratory frame.
		We represent the longitudinal scalar wave as a horizontal vector, and the usual Hertzian wave as a vertical or "transverse" vector.
		A better way is to bend or curve spacetime itself in a small region, so that a longitudinal wave that passes through that region now possesses a vertical component with respect to that region (Figure 6).
	www.cheniere.org /books/starwarsnow/scalardetector.htm (541 words)

	Longitudinal Wave Cuts Off the Hull (Site not responding. Last check: 2007-10-08)
		Longitudinal wave cuts at 4.01 and 6.02 knots were obtained using a capacitance wire wave probe located at 1.854 m (6.083 ft) (y/L=0.324) from the centerline of the model.
		Since the wave probe is fixed, these measurements represent a time history of the waves generated by the model at that location.
		The wave cuts are plotted from an origin which represents the location of the forward perpendicular offset by the distance of the wave probe from the centerline.
	www.dt.navy.mil /hyd/sur-shi-mod/lon-wav-cut (227 words)

	Speed of Sound
		The propagation speeds of traveling waves are characteristic of the media in which they travel and are generally not dependent upon the other wave characteristics such as frequency, period, and amplitude.
		The speed of sound in air and other gases, liquids, and solids is predictable from their density and elastic properties of the media (bulk modulus).
		This agrees well with the measured speed of sound in water, 1482 m/s at 20°C. The situation with solids is considerably more complicated, with different wave speeds in different directions, in different kinds of geometries, and differences between transverse and longitudinal waves.
	hyperphysics.phy-astr.gsu.edu /hbase/sound/souspe2.html (335 words)

	Wave Motion (Site not responding. Last check: 2007-10-08)
		Notice the formation of a wave made by the flowing salt.
		(longitudinal wave) 4) Use a slinky, rope or springs to form longitudinal or transverse waves.
		Have students put their fingers on the vibrating string to locate the nodes and see that the wave is out of phase.
	www.iit.edu /~smile/ph9106.html (522 words)

	PIRA 3B20.00 LONGITUDINAL PULSES AND WAVES
		Show longitudinal waves on a bifilar suspended slinky with paper flags every fifth coil.
		Complete discussion of traveling and standing waves on an air track with the critical point being the special mass and damping necessary for the last glider in the traveling case.
		The Pasco longitudinal wave machine has vertical rods pivoted at the center and coupled with springs.
	www.wesleyan.edu /physics/demos/pirabib/3oandw/3B20.html (268 words)

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