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==Liên kết ngoài==
*[http://www.sengpielaudio.com/calculator-speedsound.htm Calculation: Speed of sound in air and the temperature]
*[http://www.sengpielaudio.com/SpeedOfSoundPressure.pdf Speed of sound - temperature matters, not air pressure]
*[http://www.pdas.com/atmos.html Properties Of The U.S. Standard Atmosphere 1976]
*[http://www.mathpages.com/home/kmath109/kmath109.htm The Speed of Sound]
*[http://www.bustertests.co.uk/answer/how-to-measure-the-speed-of-sound-in-a-laboratory/ How to measure the speed of sound in a laboratory]
*[http://www.acoustics.salford.ac.uk/schools/index1.htm Teaching resource for 14-16 yrs on sound including speed of sound]
*[http://www.npl.co.uk/acoustics/techguides/soundpurewater/ Technical Guides - Speed of Sound in Pure Water]
*[http://www.npl.co.uk/acoustics/techguides/soundseawater/ Technical Guides - Speed of Sound in Sea-Water]
*[http://space.newscientist.com/article/mg19826504.200-did-sound-once-travel-at-light-speed.html?feedId=online-news_rss20 Did sound once travel at light speed?]
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