Notice how the quantities above have both a size and a direction associated with them. The direction of a vector can be given in a written description, or drawn as an arrow. The length of an arrow ...

a field can also be a scalar field or a vector field. A scalar field is specified by a single number at each point. Some well-known examples of scalar fields include temperature and pressure of a gas, ...

With lots of worked examples, problems and summaries and a comprehensive solutions set, this book introduces the basic concepts of electrostatic and magnetostatic fields, covers equations, propagation ...