This study was submitted in partial fulfillment of the requirements for the M.S. degree at Purdue University, August 1968.

The lack of parallelism between the force and acceleration vectors has several apparently paradoxical consequences that have been recently examined. This article uses a different and more general mode of analysis than previous authors to derive quite general, rather than particular, results. (Author/SK)

A diffusional driving force, called the radial force, which is responsible for the increase with time of the scalar separation between a fixed point and a particle undergoing three-dimensional Brownian motion, is derived using Boltzmann's equation. (Author/HM)

The last two decades of collecting evidence to support the plate tectonic theory is reviewed. Discussion also involves how other terrestrial plants show evidence of once having been hot but with long-term stability and no continuing convection. (Author/SA)

Movement education is a vital addition to the professional training of dance instructors. (LH)

Investigates the change in weight associated with the electrostatic potential energy for a system of two point charges supported side by side against a weak gravitational field. (Author/GA)

In using mobiles as a lesson in a high school sculpture class, two important factors, necessary for a successful project, were discussed. One was motion, the other the level of sophistication desired. Students developed complex concepts while learning to appreciate the construction of a mobile. (Author/RK)

"Ready...and...tiptoe!" Creative movement adds style and structure to classroom learning. (Editor)

Presents a selection of fascinating physics demonstrations that look impossible but that can be done with some knowledge of physics and some practice. Includes four demonstrations that illustrate free fall motion and the center of mass of a system. (DDR)

Presents a five-step lesson to teach young children with disabilities to recognize and decode words by actively involving the children in rhythm and movement. The lesson's objectives are provided as well as step-by-step instructions. The lesson calls for students to engage in guided and individual practice. (CR)