About: Particle velocity

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Particle velocity is the velocity of a particle (real or imagined) in a medium as it transmits a wave. The SI unit of particle velocity is the metre per second (m/s). In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back and forth in the direction the sound wave is travelling as it passes.

Attributes	Values
rdf:type	yago:WikicatSoundMeasurements yago:Abstraction100002137 yago:Act100030358 yago:Activity100407535 yago:Event100029378 yago:Measurement100996969 yago:PsychologicalFeature100023100 yago:YagoPermanentlyLocatedEntity
rdfs:label	Schallschnelle (de) Vitesse particulaire (fr) Deeltjessnelheid (nl) Particle velocity (en)
rdfs:comment	La vitesse (ou vélocité) particulaire intervient dans l'étude des ondes acoustiques et mécaniques. C'est la célérité d'une particule oscillant autour de sa position d'équilibre, elle est différente de la vitesse de propagation de l'onde. * Portail de la physique (fr) Die Schallschnelle, Formelzeichen (auch ), gibt an, mit welcher Wechselgeschwindigkeit die Luftteilchen (bzw. Teilchen des Schallübertragungsmediums) um ihre Ruhelage schwingen; also die Momentangeschwindigkeit eines schwingenden Teilchens. Die zugehörige logarithmische Größe ist der Schallschnellepegel. Die Schallschnelle darf nicht mit der Schallgeschwindigkeit c, also der Phasengeschwindigkeit der Schallwellen oder der Gruppengeschwindigkeit im Übertragungsmedium, verwechselt werden, obwohl diese auch in m/s gemessen werden. (de) Particle velocity is the velocity of a particle (real or imagined) in a medium as it transmits a wave. The SI unit of particle velocity is the metre per second (m/s). In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back and forth in the direction the sound wave is travelling as it passes. (en) Onder deeltjessnelheid verstaat men de macroscopische snelheid van een 'deeltje', d.w.z een gedeelte, een kleine hoeveelheid, van het medium waardoorheen een golf zich voortplant. Het betreft niet een individueel molecuul of atoom, maar eerder een klein pakketje lucht of andere materie. Individuele atomen of moleculen vertonen allerlei andere bewegingen dan de beweging die door de macroscopische golf worden veroorzaakt (zie bijvoorbeeld Brownse beweging). (nl)
dcterms:subject	Sound Sound measurements Acoustics Physical quantities
Wikipage page ID	505929 (xsd:integer)
Wikipage revision ID	1055892307 (xsd:integer)
Link from a Wikipage to another Wikipage	Pressure Neper Particle acceleration Sound particle Angular wavevector Decibel Level (logarithmic quantity) Green's function Phase shift Speed of sound Sound Sound measurements Amplitude Acoustics Angular frequency Fluid parcel Particle displacement Root mean square International System of Units Physical quantities Kinetic theory of gases Transverse wave Longitudinal wave Transmission medium Sine wave Sound Wave Particle velocity level
Link from a Wikipage to an external page	http://www.weles-acoustics.com/en/technologies/particle-velocity-sensor/ https://oro.open.ac.uk/44496/1/ali_tonddast_navaei_thesis.pdf https://www.microflown.com http://www.sengpielaudio.com/RelationshipsOfAcousticQuantities.pdf http://www.sengpielaudio.com/calculator-ak-ohm.htm
sameAs	Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity Particle velocity
dbp:wikiPageUsesTemplate	dbt:! dbt:Nobreak dbt:Other_uses dbt:Reflist dbt:Sfrac dbt:No_break dbt:Sound_measurements
has abstract	Die Schallschnelle, Formelzeichen (auch ), gibt an, mit welcher Wechselgeschwindigkeit die Luftteilchen (bzw. Teilchen des Schallübertragungsmediums) um ihre Ruhelage schwingen; also die Momentangeschwindigkeit eines schwingenden Teilchens. Die zugehörige logarithmische Größe ist der Schallschnellepegel. Die Schallschnelle hängt vor allem von der 'Frequenz' (Tonhöhe, bzw. Schallenergie eines Rauschens oder anderer komplexer Wellenformen) und vom Schalldruckpegel eines gemessenen Schallereignisses ab, sowie ferner etwa von dem herrschenden Druck und der Trägheit des Mediums (Luft, Wasser, Feststoffe etc.). Die Schallschnelle darf nicht mit der Schallgeschwindigkeit c, also der Phasengeschwindigkeit der Schallwellen oder der Gruppengeschwindigkeit im Übertragungsmedium, verwechselt werden, obwohl diese auch in m/s gemessen werden. (de) La vitesse (ou vélocité) particulaire intervient dans l'étude des ondes acoustiques et mécaniques. C'est la célérité d'une particule oscillant autour de sa position d'équilibre, elle est différente de la vitesse de propagation de l'onde. * Portail de la physique (fr) Particle velocity is the velocity of a particle (real or imagined) in a medium as it transmits a wave. The SI unit of particle velocity is the metre per second (m/s). In many cases this is a longitudinal wave of pressure as with sound, but it can also be a transverse wave as with the vibration of a taut string. When applied to a sound wave through a medium of a fluid like air, particle velocity would be the physical speed of a parcel of fluid as it moves back and forth in the direction the sound wave is travelling as it passes. Particle velocity should not be confused with the speed of the wave as it passes through the medium, i.e. in the case of a sound wave, particle velocity is not the same as the speed of sound. The wave moves relatively fast, while the particles oscillate around their original position with a relatively small particle velocity. Particle velocity should also not be confused with the velocity of individual molecules, which depends mostly on the temperature and molecular mass. In applications involving sound, the particle velocity is usually measured using a logarithmic decibel scale called particle velocity level. Mostly pressure sensors (microphones) are used to measure sound pressure which is then propagated to the velocity field using Green's function. (en) Onder deeltjessnelheid verstaat men de macroscopische snelheid van een 'deeltje', d.w.z een gedeelte, een kleine hoeveelheid, van het medium waardoorheen een golf zich voortplant. Het betreft niet een individueel molecuul of atoom, maar eerder een klein pakketje lucht of andere materie. Individuele atomen of moleculen vertonen allerlei andere bewegingen dan de beweging die door de macroscopische golf worden veroorzaakt (zie bijvoorbeeld Brownse beweging). De deeltjessnelheid is periodiek, het deeltje beweegt zich heen en weer om de evenwichtstoestand. De deeltjessnelheid is een vectoriële grootheid, die grootte en richting heeft. Beide, de grootte en de richting, kunnen variëren met de tijd. (nl)
gold:hypernym	Velocity
prov:wasDerivedFrom	wikipedia-en:Particle_velocity?oldid=1055892307&ns=0
page length (characters) of wiki page	7083 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Particle_velocity
is Link from a Wikipage to another Wikipage of	Particle acceleration Particle velocity probe Sound particle Index of physics articles (P) Inverse problem Planar Doppler velocimetry Tuning fork Acoustic wave Ambisonics Flow velocity Particle displacement Rayl Inverse-square law Sound energy Acoustic holography Acoustic impedance Acoustic location Acoustic wave equation Acoustics Sound intensity

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