TABLE 30.— DIMENSIONAL EQUATIONS OF FUNDAMENTAL AND 

 DERIVED UNITS (concluded) 



Part 3. — Derived units (electrical and magnetic) 



59 



Conversion factor 



Name of unit 



Sym- 

 bol* 



Electrostatic 

 system 



Magnetic moment 



Intensity magnetization . 

 Magnetic induction 



Magnetic susceptibility . 

 Magnetic permeability . 

 Current density 



-2 

 -2 



Self-inductance Jf 



Mutual inductance V)1t 



Magnetic reluctance J-jJ 



Thermoelectric power t ■ ■ ■ — 



Peltier coefficient t — 



Quantity of electricity Q 



Electric displacement D 



Electric surface density... D 



Electric field intensity F 



Electric potential V 



Electromotive force K 



Electrostatic capacity C 1 



Dielectric constant K 



Specific inductive capacity. — 000 



Current I 



Electric conductivity 7 



Resistivity P 



Conductance g 



Resistance R 



Magnetic pole strength.... m 



Quantity of magnetism.... m 



Magnetic flux * 



Magnetic field intensity .... H 



Magnetizing force H 



Magnetic potential II 



Magnetomotive force \f 



1 



1 -1 



-1 1 



\ 



\ 



\ 



i _ ? 



-l -i 

 -l -i 



lectromagnetic 

 system 



—2 



2 



-1 



-\ 

 —I 

 — ', 



\ -2 



3 —2 



\ —2 



-1 2 



-2 2 



6 











-a -1 



1 

 1 



-1 



-1 



-1 







— i 



-1 



1 



-i 



esu 



t 



c 

 c 

 c 



1 'c 

 1 c 

 1 c 



1/c' 



-1 C X 



1 l/c a 

 i 1/c 



1 c 



1/c 



1/c 

 1/c 

 1/c 



1 c 



1/c 2 



c 



1/c 1 



1/c* 



t 1/c 

 t 1/c 



* As adopted by American Institute of Electrical Engineers, 1915. 



i c is the velocity of an electromagnetic wave in the ether = 3 x 10 10 approximately. 



t This conversion factor should include [rf -1 ]. 



\bsolute 

 svstem 



-2 



1 

 









 -1 

 



1 

 -1 -1 



1 1 



1 1 

 1 1 







-1 



1 

 1 



1 



_2 



7 



-1 

 -1 



1 

 1 



1 





 

 







1 









 

 





 



1 



1 

 1 









 

 



1 

 1 



1 



1 



1 







1 



1 



-1 



ot 

 ox 



SMITHSONIAN PHYSICAL TABLES 



