Written by Tony R. Kuphaldt and Jason Starck, this chapter of All About Circuit's second volume on Alternating Current describes complex numbers: "In order to successfully analyze AC circuits, we need to work with...

This site contains various applets and animations of physical processes, demonstrating various ideas in waves, optics, mechanics, and thermodynamics. The site also contains information on the theory behind diffraction...

This paper, presented at the 2001 Physics Education Research Conference, offers a new way to approach homework problems in electrostatics through the use of “bridging exercises” as part of students’ homework. These...

This lesson plan, authored and curated by David P. Stern, introduces the concept of energy through the ideas of conservation and the ability to run machines. A series of both qualitative and quantitative examples are...

This paper, presented at the 2002 Physics Education Research Conference, describes a study intended to understand middle school students' cognitive conflict levels when they were confronted with anomalous situations. In...