Introduction
SI units
Basic interactions
Dimensions and units
Numeric values of the fundamental constants
Energy Units
Magnetic resonance in SI units
Quantity  Formula  Comment 
Coulomb interaction energy  J = C V 
The permittivity of vacuum connects charges with energy 
Coulomb interaction force  and force.  
BiotSavart Law  [tesla] [newtons] 
 velocity 
Magnetic Field due to a Long Straight Wire 


Force Between Long Parallel Wires  The force is attractive if the currents are in the same direction and repulsive otherwise.  
Lorentz Force Law  Combined electromagnetic force  
Magnetic dipole is the magnetic moment from a small loop of a current 

I is electric current, S is area inside the loop 
Magnetic dipoledipole interaction 


and connection  Permittivity and Permeability are connected via the speed of light  
Gravitational interaction  , [joule]  G is the gravitational constant 
©Nikolai Shokhirev, 20012002