26o 



Table 292. 



RATIO OF THE ELECTROSTATIC TO THE ELECTROMAGNETIC UNIT OF 



ELECTRICITY = F 



1856 



1868 

 1869 

 1874 

 1879 

 1879 

 1879 

 1880 

 1881 

 1882 

 1883 

 1884 



1886 

 1886-8 



1890 



1891 

 1892 

 1896 

 1898 

 1898 



1904-7 



V 

 Cm. per sec. 



2.75-2.92 X 10^0 



2.71-2.88 



2.86-3.00 



2.950-3.018 



2.98-3.00 



3.001-3.029 

 3.016-3.03 1 



2.999-3.009 

 3.003-3.008 

 3.005-3.015 



2-995-3-OIO 



2.990-2.995 



2.99706-2.99741 



Mean. 



3.11X1010 



2.84 



2.81 



2.90 



2.981 



2.96 



2.967 



2.955 



2.99 



2.87 



2.963 



3.019 



3-015 



3.009 



2.92 



3.000 

 2.996 



3.009 

 2.991 

 3.001 



2-9973 



3.026 



3.009 



2.9971 



Determined by 



R. Kohlrausch and 



W. Weber. 

 Maxwell. 



Thomson and King. 

 McKichan. 

 Rowland. 

 Ayrton and Perry. 

 Hockin. 

 Shida. 

 Stoletow. 

 Exner. 



J. J. Thomson. 

 Klemencic. 



Colley. 



Himstedt. 



Thomson, Ayrton 

 and Perry. 



Rosa. 



J. J. Thomson and 

 Searle. 



Pellat. 



Abraham. 



Hurmuzescu. 



Perot and Fabry. 



Webster. 



Lodge and Glaze- 

 brook. 



Rosa and Dorsey. 



Reference. 



Pogg. Ann. 99; 1856. 

 Phil. Trans. ; 1868. 

 B. A. Report; 1869. 

 Phil. Mag. 47 ; 1874. 

 Phil. Mag. 28 ; 18S9. 

 Phil. Mag. 7 ; 1S79. 

 B. A. Report ; 1879. 

 Phil. Mag. 10; iSSo. 

 Jour, de Phys. ; 1881. 

 Wien. Ber. ; 1882. 

 Phil. Trans. ; 1883. 

 Wien. Ber. 83, 89, 93 ; 



Wied. Ann. 28; 18S6. 



)i-6. 



Wied. Ann. 29, 33, 35 ; 1887-8. 



Electr. Rev. 23; 18SS-9. 

 Phil. Mag. 28 ; 1889. 



Phil. Trans. ; 1890. 

 Jour, de Phys. 10 ; 1S91. 

 Ann. Chim. et Phys. 27; 1829. 

 Ann. Chim. et Phys. 10 ; 1897. 

 Ann. Chim. et Phys. 13 ; 1898. 

 Phys. Rev. 6 ; 1S9S. 



Cam. Phil. Soc. 18; 1899. 

 Bull. Bur. Standards 3 ; 1907. 



The last of the above determinations is the result of an extended series of measurements upon 

 various forms of condensers, and is believed to be correct within i /lOO per cent. This, however, 

 assumes that the International Ohm is 10' c.g.s. units. The value of Fis therefore subject to 

 one-half the error of the International Ohm. 



Smithsonian Tables. 



