Shows that it is possible to use an electric balance to measure Coulomb's force in a simpler way. Describes a demonstration set up to measure the repulsive force between two electric charges. (CCM)

Describes 10 experiments designed to serve as a qualitative introduction to Rayleigh-Taylor Instability. (WRM)

Describes a safe but qualitative alternative to an experiment in which bullets are shot into wooden blocks from below, with some bullets hitting the blocks in the center and others off-center. Explains why the off-center blocks reach greater heights in spite of the fact that the bullet's energy is divided between translational and rotational…

Features an assignment involving average monthly temperatures that can serve as an example of curve-fitting for a periodic function. (WRM)

Describes a laboratory activity in a liberal-arts physics course entitled "Galileo to Newton and Beyond" in which students examine the orbits of Earth and Mars from heliocentric and geocentric viewpoints. (WRM)

Explains how to determine the polarity of static electric charges by using an electrician's tool called the test pencil. (WRM)

Presents three examples of hands-on experiments that use an inexpensive magnetic-field sensor to quantitatively study magnetic fields. (WRM)

Describes an experiment in which students work together in small groups, take data, and make a calculation to roughly determine the diameter of the blind spot in their eye. (WRM)

Describes the assembly of a simple loudspeaker that can be used to generate high fidelity sound when plugged into a boom-box speaker output. (WRM)

Explains the strange effect a crosswind has on motion. (WRM)

Addresses the relationship between car speed and the safe distance between cars in a linear flow of traffic. (WRM)

Describes students' reactions to a university physics class for engineering majors that was built around cooperative learning activities. Finds that student feedback supports research claims made about the learning benefits of this teaching method. (WRM)

Describes a modification to an inexpensive pinewood derby car that can be used to demonstrate the summation of the force vectors important in sailing. (WRM)

Describes the use of a simple inexpensive model of a five-legged table in a physics course for industrial-design students to spark useful discussion about several aspects of statics. (WRM)

Describes the measurement of blood speed in blood vessels by using the Doppler effect. (WRM)