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Topic: Velocity of sound

Related Topics

Speed of sound

Sound pressure level

Sound

Metre per second

Acoustics

Density of air

Transsonic

Speed

Mach number

Relativistic Euler equations

Air pressure

Shock wave

Sound barrier

Supersonic

Adiabatic index

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	sound. The Columbia Encyclopedia, Sixth Edition. 2001-05
		Sounds are generally audible to the human ear if their frequency (number of vibrations per second) lies between 20 and 20,000 vibrations per second, but the range varies considerably with the individual.
		A sound wave can be reinforced with waves from a body having the same frequency of vibration, but the combination of waves of different frequencies of vibration may produce “beats” or pulsations or may result in other forms of interference.
		A sound is louder as the amplitude of vibration is greater, and the intensity decreases as the distance from the source increases.
	www.bartleby.com /65/so/sound.html (1021 words)

	Speed of sound - Wikipedia, the free encyclopedia
		Thus the speed of sound increases with the stiffness of the material, and decreases with the density.
		Thus in steel the speed of sound is approximately 5100 m/s.
		The speed of sound in water is of interest to those mapping the ocean floor.
	en.wikipedia.org /wiki/Velocity_of_sound (771 words)

	Velocity of Sound (Site not responding. Last check: 2007-10-25)
		The purpose of this laboratory activity is to use a standing sound wave in air, enclosed in a plastic tube, to measure the velocity of sound.
		The experiment relies on the fact that when a sound wave reaches the end of the tube, a portion of that wave is reflected or bounced back into the tube in the opposite direction.
		Adjust the audio oscillator to one of the frequencies chosen by your instructor (or use frequencies of 800 Hz, 1000 Hz, 1200 Hz and 1400 Hz).
	physics.uwstout.edu /Univphys1/labs/sound.htm (555 words)

	Sound velocity - Wikipedia, the free encyclopedia
		Sound velocity in conventional use in scientific literature is the same as sound speed.
		Sound velocity should not be confused with sound particle velocity, which is the velocity of the individual particles.
		In a gas the sound particle velocity is comparable to the sound speed, while in a solid or fluid the sound particle velocity is much smaller than the sound speed.
	en.wikipedia.org /wiki/Sound_velocity (127 words)

	Sound
		The velocity of sound in air is 331 m/s and the velocity of sound in helium 965 m/s.
		The velocity of sound in air at 0 degrees C is 331 m/s.
		The velocity of sound in air at 0 C is 331 m/s.
	www.unc.edu /~rowan/phys24/p4f3ch12.html (316 words)

	Sound Basics
		Sound originates when a body moves back and forth rapidly enough to send a coursing wave through the medium in which it is vibrating.
		Examples of periodic motion are the moon's orbit of the earth, a beating heart, the whirring tail of a frightened rattlesnake, the wings of a hummingbird, and the movement of the valve on a revolving bicycle tire.
		The square of this velocity is proportional to the temperature in kelvins (i.e.
	www.avatar.com.au /courses/PPofM/sound/soundbasicsrtfcopy.html (1521 words)

	Elasticity and density and velocity of transmission
		Density has the opposite effect on the velocity of sound, that is, with other factors constant, a denser material (such as lead) passes sound slower.
		When sound waves traveling at different velocities pass obliquely (at an angle) from one medium into another, the waves are refracted; that is, their line of travel is bent.
		The result is that the upper portion of the sound wave moves faster than the lower portion and causes a gradual change in the direction of travel of the wave.
	www.tpub.com /neets/book10/39f.htm (1307 words)

	#1 Site For Learning Science
		Sound is a form of energy that travels in the form of a longitudinal wave.
		If a source of sound such as a watch is kept at one focus, the sound of the ticking of the watch is clearly heard at the other focus.
		Since the sound velocity is dependent on various parameters such as air temperature, pressure, wind directions, etc. this experiment has to be performed several times with interchanging positions of A and B; Thus an average velocity of the sound can be determined.
	home.att.net /~cat4a/wave-II.htm (901 words)

	The Velocity of Sound (Site not responding. Last check: 2007-10-25)
		The speed of sound in the rod is calculated using the length of the rod and the frequency of the vibrations.
		Using your measured value for the speed of sound in air (from Part I) and your data from Part II, determine the speed of sound in the metal rod, and the uncertainty in the calculated value.
		Compare with known values of the speed of sound in the metal of which the rod is composed.
	teacher.nsrl.rochester.edu /phy_labs/Speed_of_Sound/Speed_of_Sound.html (1418 words)

	SOUND
		He demonstrated that the frequency of sound was related to the perceived pitch by scraping a chisel across a brass plate causing a screech.
		Sound is a molecular disturbance and the disturbance is caused by a vibration.
		The same principle applies to sound waves, a stationary observer hears the true pitch of a stationary sound source, an observer moving towards a sound source hears an increased frequency or pitch and an observer moving away from a sound source hears a decreased frequency or pitch.
	www.newi.ac.uk /buckleyc/sound.htm (3309 words)

	Sound Waves - School for Champions: Succeed in Physical Science
		The speed or velocity of sound in air is approximately 344 meters/second, 1130 feet/sec.
		Since the velocity of sound is approximately the same for all wavelengths, frequency is often used to better describe the effects of the different wavelengths.
		Sound can also be created by vibrating an object in a liquid such as water or in a solid such as iron.
	www.school-for-champions.com /science/sound.htm (1327 words)

	Acoustics Monitoring Program
		The speed of a wave is the rate at which vibrations propagate through the medium.
		The speed of sound in water is approximately 1500 m/s while the speed of sound in air is approximately 340 m/s.
		Therefore, a 20 Hz sound in the water is 75 m long whereas a 20 Hz sound in air is 17 m long.
	www.pmel.noaa.gov /vents/acoustics/tutorial/4-sound-velocity.html (75 words)

	The Science House - Speed of Sound
		In the second part the students measure the velocity of sound by measuring the echoes produced in a tube.
		Velocity and speed are names for the distance you can travel in a certain amount of time.
		Students should conclude that sound does have a speed and it is measurable The students should determine a speed of sound.
	www.science-house.org /teacher/empower/SpdSound.html (1244 words)

	Sound Velocity Sensors & Profilers
		Developed from the acclaimed miniSVS sound velocity sensor, the SoundBar 2 uses a digital time of flight technique that gives the most accurate sound velcoity data in the world.
		Coupled to a pressure sensor in a durable titanium housing, the SoundBar 2 is lowered through the water column, measuring the sound velocity as it goes.
		The display unit records this data and presents the mean sound velocity value over the profile, which may then be output in a variety of industry standard formats to the echosounder.
	www.valeport.co.uk /soundvelocity.htm (488 words)

	Single Beam Sound Velocity Correction (Site not responding. Last check: 2007-10-25)
		The corrections start with a sound velocity profile, which is the measurement of sound velocity at discrete intervals in the water column.
		To find the sound velocity correction using the profile (and hence, the correct depth value of 17.00 meters), Hypack® programs track the portion of travel time spent within each layer.
		Sound travels another 6 meters in the 2nd layer (0.004096 seconds at 1465 m/sec) leaving a time residual of 0.005409 seconds to the bottom.
	www.coastalo.com /newsletter/4_02/mike.htm (333 words)

	00.05.10: Discovering the Mathematics of Sound
		Sound is the form of energy which most of us seem to take for granted.
		In the case of sound waves, the disturbance is in the form of a change in pressure and density which is sometimes described as a vibration in the medium.
		If a sound source 100 feet away has an intensity of 90 dB and you were to move to a distance 200 feet from the source, the intensity of the sound would drop by 6 dB (if the distance from the source is doubled, there is a drop of 6 dB).
	www.yale.edu /ynhti/curriculum/units/2000/5/00.05.10.x.html (3579 words)

	musicand
		the average velocity of the molecules in the bunched up bands causes a net drift of molecules towards me; in the thinned out bands there is a net drift away from me. This is the velocity variation that is usually ignored in the description of a sound wave.
		A little to the right of this line the average velocity is towards one direction, and a little to the left of the line the average velocity is towards the opposite direction.
		Average molecular velocity and pressure are multiplied together to produce the power flow, which is 1 Watt per square meter (peak) for the 117 dB SPL sound level.
	www.silcom.com /~aludwig/musicand.htm (1859 words)

	Physics Demonstrations - Sound
		Sound appears to be a topic distinct from motion and heat.
		A dramatic illustration of the variation of the speed of sound with the density of a gas is performed by breathing a low density and a high density gas and talking as the gas is expelled from the lungs.
		The speed of sound in a gas is proportional to the square root of its density.
	sprott.physics.wisc.edu /demobook/chapter3.htm (7341 words)

	Sound (Site not responding. Last check: 2007-10-25)
		Sounds are generally audible to the human ear if their frequency lies between 20 and 20,000 vibrations per second.
		Sound waves with frequencies below the audible range are called subsonic, and those with frequencies higher than the audible range are called ultrasonic.
		The pitch of a sound depends upon the frequency of vibration; the higher the frequency, the higher the pitch.
	www.neutron.anl.gov /hyper-physics/sound.html (161 words)

	PIRA 3B30.00 WAVE PROPERTIES OF SOUND (Site not responding. Last check: 2007-10-25)
		Note: Physics textbooks incorrectly state that a sound wave reflected at a rigid boundary is 180 degrees out of phase with the incident wave.
		Measure the speed of sound by the phase shift of a trace on the oscilloscope as the source is moved back and forth.
		Sound is transmitted through a long wood rod from a music box in the basement to a sounding box in the classroom.
	www.physics.ncsu.edu /pira/3oandw/3B30.html (753 words)

	sound: Characteristics of Sound Waves
		Sounds are generally audible to the human ear if their frequency (number of vibrations per second) lies between 20 and 20,000 vibrations per second, but the range varies considerably with the individual.
		A sound wave is usually represented graphically by a wavy, horizontal line; the upper part of the wave (the crest) indicates a condensation and the lower part (the trough) indicates a rarefaction.
		The wavelength of a sound can be determined by dividing the numerical value for the velocity of sound in the given medium at the given temperature by the frequency of vibration.
	www.infoplease.com /ce6/sci/A0861183.html (534 words)

	NTU Info Centre: Sound particle velocity (Site not responding. Last check: 2007-10-25)
		Particle velocity or sound particle velocity is the velocity v of air particles in m/s.
		Usually in acoustics the particle velocity is measured as the particle velocity level L
		The sound velocity is connected to particle displacement or particle amplitude ξ in m by:
	www.nowtryus.com /article:Sound_particle_velocity (116 words)

	Resonance Tube: Velocity of Sound (Site not responding. Last check: 2007-10-25)
		To use the resonance to determine the velocity of sound in air at ordinary temperatures.
		In this experiment the velocity of sound in air is to be found by using tuning forks of known frequency.
		The velocity in miles per hour may be found by multiplying the velocity in m/sec by the factor 2.24.
	hyperphysics.phy-astr.gsu.edu /hbase/class/phscilab/restube2.html (481 words)

	Velocity of sound (Site not responding. Last check: 2007-10-25)
		The velocity of sound is used to compute the x-axis unit if Distance [meter] or Distance [feet] is chosen for the time domain plot types.
		using an accelerometer instead of a microphone, it is the velocity of propagation in the structure that is to be typed, not the sound velocity.
		Note that changing the velocity of sound in this dialog box will also affect the other time domain plot types, such as energy-time-curve.
	www.winmls.com /hjelpfiler/velocityofsound1.htm (142 words)

	[No title] (Site not responding. Last check: 2007-10-25)
		Sound will increase in volume (get louder) when the length of the tube is one-fourth length of the sound wave.
		By measuring the length between the top of the graduated cylinder and water level in the cylinder that causes the tuning fork to resonate, the velocity of the sound wave can be calculated.
		Using the equation, velocity = frequency x wavelength, calculate the velocity of the sound wave.
	www.ligo-la.caltech.edu /Teacher/soundvel.doc (337 words)

	Live Sound International \| Academic Pursuits: The Scientific Essence Of Sound
		All are related to the physics of sound propagation in an elastic medium that result in changes to the displacement, pressure, density, temperature, and velocity within the medium.
		Note that the particle velocity should not be confused with the characteristic propagation velocity of sound, 343 milliseconds (m/s), which describes the rate at which sound travels through the medium.
		The volume velocity (U) in its most simple sense can be considered to be the amount of air that is moved by an acoustic source, such as a loudspeaker, or the amount of air that causes a transducer to move, such as a microphone diaphragm.
	www.livesoundint.com /archives/2003/oct/sound/sound.php (1973 words)

	The Baldwin Project: The Story Book of Science by Jean Henri Fabre
		At the scene of the explosion light and noise are coincident; but for persons at a distance the light, which travels at an incomparably greater velocity, arrives before the sound, which moves more slowly.
		If the sound does not arrive until after, it is because it travels much less rapidly and, in order to cover a considerable distance, requires considerable time, which is easily measured.
		Sound, therefore, moves through the air, in a single second, a distance of 3400 meters.
	www.mainlesson.com /display.php?author=fabre&book=science&story=sound (1193 words)

	The Apples In Stereo: Velocity of Sound (2002): Reviews
		In terms of pure power-pop delight, Velocity of Sound is hard to beat -- it's one of those records that taps directly into your musical pleasure center and jabs repeatedly at the best bits.
		But you can't necessarily count the band's new younger focus as a flaw; Velocity of Sound showcases a tight, concentrated power-pop sound that the band seemed to have lost on their last couple outings.
		The result throughout Velocity of Sound is an impression of the Apples in Stereo as introductory ironists, non-threatening to kids and parents, accessible and enjoyable to all.
	www.metacritic.com /music/artists/applesinstereo/velocityofsound (398 words)

	Traveling Sound (Site not responding. Last check: 2007-10-25)
		fluid flow, aeronautics, etc.), but the way you mean it, it is defined as the velocity of an object divided by the velocity of sound.
		That means that if you divide velocity by velocity, the units cancel out and the number is dimensionless.
		As for the velocity of sound, yes it is dependant on other things.
	www.newton.dep.anl.gov /askasci/phy99/phy99497.htm (227 words)

	The Apples in Stereo: Velocity of Sound - PopMatters Music Review (Site not responding. Last check: 2007-10-25)
		Yet the sound is the key to the energetic aura of the album.
		The songs on Velocity of Sound are quintessential Apples, more in line with their straightforward first two albums than their more recent attempts to diversify their sound.
		On Velocity of Sound they do that with more spark and spunk than ever, using their songwriting, performing and studio skills to send a glow out from the speakers.
	www.popmatters.com /music/reviews/a/applesinstereo-velocity.shtml (946 words)

	Rocktron Product Reviews - Velocity 250 from Sound Check Magazine (Site not responding. Last check: 2007-10-25)
		The Velocity 250 can be bridged by a switch on its front panel, to act in mono; in this mode delivering 250 watts into 8 ohms, respectively 170 watts into 16 ohms.
		As there is no ventilator for the necessary air circulation in the poweramp, the Velocity has massive cooling fins on its sides, to provide abduction of the heat.
		In use, the Velocity 250 convinces with a neutral sound, that can be tapered to one's own personel preferences, or to the used cabinets, with the reactance and definition controls.
	www.rocktron.com /reviews/rvscv250_2.html (564 words)

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