306 TABLES 296-300.— VELOCITY OE SOUND* 



TABLE 296.— VELOCITY OF SOUND IN GASES 08 



Air, 



Gas 



dry, 1 

 " 25 

 " 50 

 " 100 



atm. 



Temp. Velocity Temp. Velocity 



°C m/sec Gas °C m/sec 



331.7 Hydrogen bromide 200 



332.0 Hydrogen chloride 296 



334.7 Hydrogen iodide 157 



350.6 Hydrogen sulfide 289 



100 386 Illuminating gas 490.4 



500 553 Methane 430 



1000 700 Neon 435 



415 Nitric oxide 10 324 



319 Nitrogen 334 



259 Nitrous oxide 263 



338 Oxygen 316 



206 Silicon tetrafluoride .... 167 



10 308 Sulfur dioxide 213 



317 Vapors: 



965 alcohol 230.6 



890 ether 179.2 



1284 water 401 



100 404.8 



Ammonia , 



Argon 



Carbon dioxide . . , 

 Carbon monoxide . 



Chlorine 



Ethane 



Ethylene 



Helium 



Hydrogen (heavy) 

 Hydrogen (light) , 



* Tables 296 and 298-300 prepared by Urick and Weissler, Naval Research Laboratory. 

 08 Bergmann, Ultrasonics, 3d ed., p. 223, Edwards Brothers, Ann Arbor, Mich., 1944. 



TABLE 297.— VELOCITY OF SOUND IN SOLIDS 



The velocity of sounds in solids varies as V£/p, where II is Young's modulus of elasticity 

 and p the density. These constants for most materials vary through a somewhat wide range. 

 The numbers can be taken only as rough approximations to the velocity in any particular case. 

 When temperatures are not marked, between 10° and 20° is to be understood. 



Substance CC m/sec 



Fe 200 4720 



" 20 4990 



" 100 4920 



" 200 4790 



Mg 4602 



Ni 4973 



Pb 1322 



Pd 3150 



Pt 20 2690 



" 100 2570 



" 200 2460 



Sn 2500 



Zn 3700 



Brick 3652 



Clay rock 3480 



Cork 500 



Granite 3950 



Marble 3810 



Paraffin 15 1304 



Slate 4510 



Tallow 16 390 



Tuff 2850 



ri /from 5000 



Ulass \to 6000 



Ivory 3013 



Vul. rubber (black) < rr. ->, 



(red) 69 



70 34 



Wax 17 880 



" 28 441 



SMITHSONIAN PHYSICAL TABLES 



