University of St. Andrews (UK)
University of St. Andrews: Insulators
The nature of insulators is described at the atomic level. Band gap theory is used to explain what distinguishes insulators from conductors.
Georgia State University
Georgia State University: Hyper Physics: Conductors and Insulators
This site from Georgia State University provides information on the distinction between conductors and insulators. Factors contributing to the insulating ability of materials are discussed.
Physics Classroom
The Physics Classroom: Static Electricity Review
This review from the Glenbrook South High School provides a series of questions on various topics associated with static electricity (such as electrical insulation). Answers and explanations are hidden, yet easily accessed from within a...