Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Speed_of_sound> ?p ?o }
- Speed_of_sound abstract "The speed of sound is the distance travelled per unit time by a sound wave propagating through an elastic medium. The SI unit of the speed of sound is the metre per second (m/s). In dry air at 20 °C, the speed of sound is 343.2 metres per second (1,126 ft/s). This is 1,236 kilometres per hour (768 mph; 667 kn), or a kilometre in 2.914 s or a mile in 4.689 s. The speed of sound in an ideal gas is independent of frequency, but does vary slightly with frequency in a real gas. It is proportional to the square root of the absolute temperature, but is independent of pressure or density for a given ideal gas. Sound speed in air varies slightly with pressure only because air is not quite an ideal gas. Although (in the case of gases only) the speed of sound is expressed in terms of a ratio of both density and pressure, these quantities cancel in ideal gases at any given temperature, composition, and heat capacity. This leads to a velocity formula for ideal gases which includes only the latter independent variables.In common everyday speech, speed of sound refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance. Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), as in air at 20 °C. Sound waves in solids are composed of compression waves (just as in gases and liquids), but there is also a different type of sound wave called a shear wave, which occurs only in solids. These different types of waves in solids usually travel at different speeds, as exhibited in seismology. The speed of a compression sound wave in solids is determined by the medium's compressibility, shear modulus and density. The speed of shear waves is determined only by the solid material's shear modulus and density.In fluid dynamics, the speed of sound in a fluid medium (gas or liquid) is used as a relative measure for the speed of an object moving through the medium. The speed of an object divided by the speed of sound in the fluid is called the Mach number. Objects moving at speeds greater than Mach1 are travelling at supersonic speeds.".
- Speed_of_sound wikiPageExternalLink mg19826504.200-did-sound-once-travel-at-light-speed.html?feedId=online-news_rss20.
- Speed_of_sound wikiPageExternalLink index1.htm.
- Speed_of_sound wikiPageExternalLink how-to-measure-the-speed-of-sound-in-a-laboratory.
- Speed_of_sound wikiPageExternalLink www.dosits.org.
- Speed_of_sound wikiPageExternalLink kmath109.htm.
- Speed_of_sound wikiPageExternalLink matproperties.htm.
- Speed_of_sound wikiPageExternalLink soundpurewater.
- Speed_of_sound wikiPageExternalLink soundseawater.
- Speed_of_sound wikiPageExternalLink atmos.html.
- Speed_of_sound wikiPageExternalLink SpeedOfSoundPressure.pdf.
- Speed_of_sound wikiPageExternalLink calculator-speedsound.htm.
- Speed_of_sound wikiPageID "147853".
- Speed_of_sound wikiPageLength "49979".
- Speed_of_sound wikiPageOutDegree "197".
- Speed_of_sound wikiPageRevisionID "682525008".
- Speed_of_sound wikiPageWikiLink Absolute_temperature.
- Speed_of_sound wikiPageWikiLink Acoustic_dispersion.
- Speed_of_sound wikiPageWikiLink Acoustic_shadow.
- Speed_of_sound wikiPageWikiLink Acoustical_oceanography.
- Speed_of_sound wikiPageWikiLink Acoustoelastic_effect.
- Speed_of_sound wikiPageWikiLink Adiabatic.
- Speed_of_sound wikiPageWikiLink Adiabatic_index.
- Speed_of_sound wikiPageWikiLink Adiabatic_process.
- Speed_of_sound wikiPageWikiLink Air.
- Speed_of_sound wikiPageWikiLink American_Civil_War.
- Speed_of_sound wikiPageWikiLink Antinode.
- Speed_of_sound wikiPageWikiLink Atmosphere_(unit).
- Speed_of_sound wikiPageWikiLink Atmosphere_of_Earth.
- Speed_of_sound wikiPageWikiLink Audio_frequency.
- Speed_of_sound wikiPageWikiLink Battle_of_Iuka.
- Speed_of_sound wikiPageWikiLink Bell_X-1.
- Speed_of_sound wikiPageWikiLink Boeing_X-43.
- Speed_of_sound wikiPageWikiLink Boltzmann_constant.
- Speed_of_sound wikiPageWikiLink Boltzmanns_constant.
- Speed_of_sound wikiPageWikiLink Bulk_modulus.
- Speed_of_sound wikiPageWikiLink Category:Acoustics.
- Speed_of_sound wikiPageWikiLink Category:Aerodynamics.
- Speed_of_sound wikiPageWikiLink Category:Chemical_properties.
- Speed_of_sound wikiPageWikiLink Category:Fluid_dynamics.
- Speed_of_sound wikiPageWikiLink Category:Physical_quantities.
- Speed_of_sound wikiPageWikiLink Category:Sound.
- Speed_of_sound wikiPageWikiLink Category:Sound_measurements.
- Speed_of_sound wikiPageWikiLink Category:Velocity.
- Speed_of_sound wikiPageWikiLink Celsius.
- Speed_of_sound wikiPageWikiLink Ceteris_paribus.
- Speed_of_sound wikiPageWikiLink Church_of_St_Laurence,_Upminster.
- Speed_of_sound wikiPageWikiLink Classical_mechanics.
- Speed_of_sound wikiPageWikiLink Compressibility.
- Speed_of_sound wikiPageWikiLink Density.
- Speed_of_sound wikiPageWikiLink Derivative.
- Speed_of_sound wikiPageWikiLink Deuterium.
- Speed_of_sound wikiPageWikiLink Digital_data.
- Speed_of_sound wikiPageWikiLink Dispersion_(optics).
- Speed_of_sound wikiPageWikiLink Dispersion_relation.
- Speed_of_sound wikiPageWikiLink Earthquake.
- Speed_of_sound wikiPageWikiLink Earths_atmosphere.
- Speed_of_sound wikiPageWikiLink Elastic_modulus.
- Speed_of_sound wikiPageWikiLink Elastic_wave.
- Speed_of_sound wikiPageWikiLink Elasticity_(physics).
- Speed_of_sound wikiPageWikiLink Elasticity_(solid_mechanics).
- Speed_of_sound wikiPageWikiLink Electron.
- Speed_of_sound wikiPageWikiLink Entropy.
- Speed_of_sound wikiPageWikiLink Equation_of_state.
- Speed_of_sound wikiPageWikiLink Equations_of_state.
- Speed_of_sound wikiPageWikiLink Flight_instrument.
- Speed_of_sound wikiPageWikiLink Flight_instruments.
- Speed_of_sound wikiPageWikiLink Fluid_dynamics.
- Speed_of_sound wikiPageWikiLink Frequency.
- Speed_of_sound wikiPageWikiLink Gas_constant.
- Speed_of_sound wikiPageWikiLink Group_velocity.
- Speed_of_sound wikiPageWikiLink Heat_capacity.
- Speed_of_sound wikiPageWikiLink Heat_capacity_ratio.
- Speed_of_sound wikiPageWikiLink Helium.
- Speed_of_sound wikiPageWikiLink Hertz.
- Speed_of_sound wikiPageWikiLink Hot_chocolate_effect.
- Speed_of_sound wikiPageWikiLink Hydrogen-1.
- Speed_of_sound wikiPageWikiLink Ideal_gas.
- Speed_of_sound wikiPageWikiLink International_System_of_Units.
- Speed_of_sound wikiPageWikiLink Ion.
- Speed_of_sound wikiPageWikiLink Isaac_Newton.
- Speed_of_sound wikiPageWikiLink Isothermal.
- Speed_of_sound wikiPageWikiLink Isothermal_process.
- Speed_of_sound wikiPageWikiLink Isotopes_of_hydrogen.
- Speed_of_sound wikiPageWikiLink KHz.
- Speed_of_sound wikiPageWikiLink Knot_(unit).
- Speed_of_sound wikiPageWikiLink Kundts_tube.
- Speed_of_sound wikiPageWikiLink Lapse_rate.
- Speed_of_sound wikiPageWikiLink Linear_elasticity.
- Speed_of_sound wikiPageWikiLink Liquid.
- Speed_of_sound wikiPageWikiLink Liquids.
- Speed_of_sound wikiPageWikiLink Longitudinal_wave.
- Speed_of_sound wikiPageWikiLink Mach_number.
- Speed_of_sound wikiPageWikiLink Marin_Mersenne.
- Speed_of_sound wikiPageWikiLink Mean_free_path.
- Speed_of_sound wikiPageWikiLink Microphone.
- Speed_of_sound wikiPageWikiLink Molar_gas_constant.
- Speed_of_sound wikiPageWikiLink Molecular_mass.
- Speed_of_sound wikiPageWikiLink Molecular_weight.
- Speed_of_sound wikiPageWikiLink NASA_X-43.