282 



Table 268 

 CUBICAL EXPANSION OF SOLIDS 



If Vz and Vi are the volumes at t 2 and fi respectively, then vi = z\ (i + CAt), C being the 

 coefficient of cubical expansion and At the temperature interal. Where only a single tem- 

 perature is stated C represents the true coefficient of cubical expansion at that temperature. 

 The coefficient of cubical expansion may be taken as three times the linear coefficient. 



Substance. 



Antimony 



Beryl 



Bismuth 



Copper 



Diamond 



Emerald 



Galena 



Glass, common tube . . 



" hard 



" Jena, borosilicate 

 59 III . . . 



" pure silica . . . 



Gold 



Ice 



Iron 



Lead 



Paraffin ...... 



Platinum 



Porcelain, Berlin . . . 



Potassium chloride . . 



" nitrate . . 



" sulphate . . 



Quartz 



Rock salt 



Rubber 



Silver 



Sodium 



Stearic acid 



Sulphur, native . . . 



Tin 



Zinc 



References to Table 266, page 280 : (1) Uffelmann, 1930. (2) Mean. (3a) Bridgman, 

 1924-5, parallel to axis. (3b) ditto, perpendicular to axis. (4a) Griineisen, paral. axis, 

 hexag. (4b) ditto, perpendicular. (5) Fizeau. (6) Disch, 1921. (7) Tutton, 1899. 

 (8) Dittenberger, 1902. (9) Uffelmann, 1930. (10) Griineisen, 1910. (11) Muller, 1916. 

 (12) Dewar, 1902. (13) Benoit, 1889. (14) Holborn, 1897. (15) Le Chatelier, 1899. 

 (16) Holborn, Day, 1900. (17) Hidnert, Sweeney, 1930. (18) ditto, 1928. (19) Scheel, 

 1921. (20) Hidnert, Shad, 1919. (21) Scheel, 1907. (22) Hagen, 1883. (23) Valentiner, 

 Wallot, 1915. (24) Dorsey, 1908. (25) Spring, 1881. (26) Matthiessen. (27) Worthing, 

 1917. (28) Hidnert, Sweeney, 1925. (29) Schulze, 1921. (30) Hidnert, 1931. 



References to Table 267, page 281: (1) Smeaton. (2) Various. (3) Fizeau. (4) 

 Matthiessen. (5) Daniell. (6) Benoit. (7) Kohlrausch. (8) Pfaff. (9) Deluc. (10) 

 Lavoisier and Laplace. (11) Pulfrich. (12) Schott. (13) Henning. (14) Russner. 

 (15) Mean. (16) Stadthagen. (17) Frohlich. (18) Rodwell. (19) Braun. (20) Deville 

 and Troost. (21) Scheel. (22) Mayer. (23) Glatzel. (24) Villari. (25) Kopp. (26) 

 Randall. (27) Dorsey. 



Note: Crucibles of thorium oxide may be used for f<3oao° C; magnesium oxide, 

 <i8oo° C; beryllium oxide, <20oo° C. Swanger, Caldwell, Bur. Standards, Journ. Res., 6, 

 H3i» I93L which see for further information about use of crucibles. 



Smithsonian Tables 



