Electromagnetism
2004 Fall
Reference:
,Electromagnetism,principles and application》
by P.Lorrain & D.Corson
Chapter 1 Vectors
Object,to describe the fieds generated
by electric charges and currents
Mathematical Tools:
A field is a function describing a quantity
at all points in space.
Several kinds,
scalar fields,
vector fields,
tensor fields
scalar fields,a single number is given for
each point in space
---- well known to us.
Example,temperature,pressure,electric
potential,etc
Tensor are necessary,
to unify electric and magnetic fields;
to describe the gravitational fields in
Einstein’s Theory of General Relativity;
to deal with strain and stress in solids,
etc
We focus on vector fields
Vector fields,both a number and a
direction at all point in space.
Examples,electric fields,magnetic
fields,current fields of fluid,etc
Chapter 2 Fields of
Stationary Electric Charges
Coulomb’s Law
Electric Field Intensity E
Superposition
Extented Charge Distribution
Electric Potential