Describes an experiment studying a free falling object which reaches terminal velocity quickly due to air resistance. The mathematical analysis includes some calculus. (TS)

Discusses the physics involved in a falling elevator and whether an occupant of a falling elevator will be unharmed if he jumps up as the elevator crashes. (MLH)

Reviews the principal sources of natural and man-made radiation, current representative levels of radiation exposure in our daily lives, and possible harmful effects of this exposure. (MLH)

Discusses the study of interference patterns with Michelson's interferometer using a laser beam rather than a sodium arc as a light source. (MLH)

Discusses effective ways to teach electrical wiring by showing the connection between the schematics symbols and the actual wiring. (MLH)

Reviews two videotapes on motion: (1) "Demonstrations of Physics, Volume 1, Motion" and (2) "Center of Mass Motion." Describes the content, strengths, and weaknesses of each video. (YP)

Provides 32 free-body diagrams. Students are to draw all forces acting on the rock in the diagrams. Gives an example. (MVL)

Describes equipment used for a magnetic force experiment that is capable of producing precise results but rugged enough to withstand handling by several hundred undergraduate students per year. (WRM)

Photographs of snow covered buildings are used to illustrate thermal radiation from various types of structures and the effect of insulation on heat loss. (CP)

Provides a refinement to the Harvard Project Physics Course handbook exercise "Stepwise Approximation to an Orbit." (CP)