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9.14 - Velocities of Sound in Different Materials

Velocity = Frequency X WaveLength = v=fL Velocity of sound in air varies greatly with temperature. The velocity at any temperature can be found adding 1 foot for a degree of Fahrenheit increase.

Air = Unity or 1083 feet per second @ sea level

Water 4 x air Hydrogen 4 x oxygen Oxygen .25 x hydrogen Air .25 x water Carbonic gas .8 x air Coal gas 1.6 x air Hydrogen 3.56 x air Brass 10.86 x air or 11480 feet per second Steel 15.34 x air or 16410 feet per second Glass 15.25 x air Copper 11.96 x air or 11.17 or 11.96 or 11670 feet per second Steel wire 15.108 or 15.34

FEET/SECOND

Silver 8,553 Gold 5,717 Platinum 8,815 Aluminum 16,740 fps Lead 4,030 Silver 8,553 Copper 11,666 Iron 16,822 Steel 16,357 Wood (along fiber) 10,000 to 15,000 Wood (across fiber) 3,000 to 5,000 Air 32° F. 1,090 Water @ 8° C. 4,708 Brick 11,980 Cork 1,640 Water 4,794 Air 1,088.5, dry CO2 free, 32°F Hydrogen 4,165

Water vapor 212°F 1,328

Table 9.1 - Velocity of sound in various materials

See Also


Acoustic Impedance Sound Measurements Sound Power Sound Pressure

Created by Dale Pond. Last Modification: Friday October 12, 2012 05:31:02 MDT by Dale Pond.