Presented are descriptions (with photographs) of demonstration equipment purchased, assembled, developed, and used at William Jewell College (Missouri) during the past 25 years. The descriptions are organized into the following topic areas: (1) mechanics; (2) heat; (3) waves, sound, and acoustics; (4) electricity; (5) optics; and (6) atomic and…

Discusses the theory and history behind an experiment that will be performed to measure the gravitational forces that effect antimatter. Describes conditions under which the principle of equivalence would be violated or supported. Reviews historical tests of equivalence, current theory and experiments. Presents the design of the new experiment.…

Reviews software package for college advanced high school physics. The package, for Apple microcomputers, contains programs instructing students on how to analyze motion of objects under a variety of circumstances. Programs include graphing motion, one-dimensional kinematics, gravity problems, projectile, dynamics (general method), motion on…

Presented are three physics problems from the New Zealand Entrance Scholarship examinations which are generally attempted by more able students. Problem situations, illustrations, and solutions are detailed. (CW)

Describes the rebuilding of a Project Physics fan cart on a PASCO dynamics cart chassis for achieving greatly reduced frictional forces. Suggests four experiments for the rebuilt cart: (1) acceleration on a level track, (2) initial negative velocity, (3) different masses and different forces, and (4) inclines. (MVL)

Presents a computer interfaced experiment that relates the equations of force equals mass times acceleration and force equals the derivative of the pressure divided by the derivative of the time. Provides setup, sample data, and equations. (MVL)

Describes an apparatus that displays longitudinal and transverse waves in a spring to large classes with the help of an overhead projector. (MVL)

Discusses the rate of fall of a wooden beam or a chimney by examining the fall of a highway lamp pole when it is sheered off at its base upon impact by a vehicle. Provides the mathematical formulas to explain and an experiment to illustrate the phenomenon. (MDH)

Describes an exhibit containing four basic demonstrations relating to center of gravity and rotational equilibrium. The demonstrations involve (1) the stack of bricks, (2) the double cone, (3) the spool roller, and (4) the platform balance. (MDH)

Provides an analysis of the forces causing the erratic motion of a knuckleball. Reveals the manner the ball should be thrown to provide maximum deflection. (Author/CP)

Photographs show three simple demonstrations of deceptive centers of gravity. (CP)

The circular motion observed when water drains into a smooth opening is analyzed. This action, as well as cycloidal atmospheric motion, is explained as the result of rotation of the coordinate system. (CP)

Offers suggestions concerning the use of the concepts weight, mass, and force with the adoption of the International System of Units (SI) in the United States. (CP)

An electronic device is described which can be used for demonstrations and laboratory work in Fourier synthesis, phase and group speeds, beats and modulation, and Lissajous figures. The hardware required is inexpensive and simple. (Author/RH)