360 TABLE8438, 439- DIELECTRIC CONSTANTS {continued). 



TABLE 438, — Standard Solntions for the Calibration of Apparatus for the Measuring of Dleleotrlo Constants. 



Turner. 



Substance. 



Diel 



const. 

 = 00 . 



Benzene , . . 

 Meta-xylene . 

 Ethyl ether . 

 Aniline . . 

 Ethyl chloride 

 O-nitro toluene 

 Nitrobenzene , 

 Water (conduct. 10 



4 



!■ 



10 



27 

 81 



288 

 376 



^% 



29** 



90 

 71 

 45 

 07 



Drude. 



Acetone in benzene at 19°. A = 75 cm. 



Per cent 

 by weight. 



O 

 20 

 40 

 60 



Density 16°. 



0.885 

 0.866 

 0.847 

 0.830 

 0.813 

 0.797 



Dielectric 

 constant. 



2.26 

 5.10 



8.43 

 12. 1 

 16.2 



20.5 



Temp, 

 coefficient. 



0.1% 



0-3 



0.4 



0-5 

 0-5 

 0.6 



Water in acetone at 19°. A = 75 cm. 



O 

 20 

 40 

 60 

 80 

 100 



0.797 

 0.856 

 0.903 

 0.940 



0-973 

 0.999 



20.5 

 31-5 

 43-5 

 57-0 

 70.6 

 80.9 



0.6% 

 0-5 

 0-5 

 0.5 



0-5 

 0.4 



Nernst. 



Ethyl alcohol in 



water at 19.5°. 



A= 00 . 



Per cent 

 by weight. 



90 

 80 

 70 

 60 



Dielectric 

 constant. 



26.0 

 29-3 

 33-5 

 38.0 



431 



TABLE 439. — Dielectric Constants of Solids. 



References on p. j6l, 

 • For the effect of temperature, see Gray-Dobbie, Pr. Roy Soc. 63, iS 

 " " " " wave-length, see K. F. Lowe, Wied. Ann. 66, 1898, 



67, 1900. 



Smithsonian Tables. 



