Reviews various science activities investigating polarized light. (SL)

Describes a student investigation of a reverse flame in a atmosphere of methane that won second place in the physics division of the International Science and Engineering Fair. Includes a discussion of falling and fracturing behavior, specifically dealing with chimneys, trees, pencil point, stirring rods, and chalk. (BT)

A homemade device for testing particle scattering is described. Also described are experiments in zero gravity conducted in free fall in the cargo space of an airplane belonging to the National Aeronautics and Space Administration. (JN)

Describes an experiment illustrating a lesson in wave interference using bright colors in a soap film. Illustrations provided. (MA)

A retroreflector is a mirror that removes distortion from a light beam. Describes experiments using the retroreflector as well as related phenomena. (JN)

A discussion of the aerodynamics of a boomerang as it relates to that of a golf ball. (BB)

Three classic visual toys are discussed and instructions are given for their construction. These are moire patterns, kaleidoscope, and stereoscope. (MP)

Detailed descriptions are given of two procedures for measuring the radius of the earth, one using a rule and the other a stopwatch. (MP)

Examines the phenomenon of water drops that float on water at room temperature. Describes experiments that have been done to study this phenomenon. (MA)

Describes an experiment revealing a visual latency effect produced by the wearing of sunglasses. (SL)

Describes experiments using fluidyne engines. These engines (which have liquid pistons), started by external heat sources, are used primarily for pumping water. Examples of various engines built from U-shaped tubes or from coiled tubes in fruit jars are provided. (DH)

A discussion of Edwin Land's experiments with color images from black-and-white photographs. Information is presented for duplication of these experiments by the amateur photographer. (BB)

Discusses studies of the neurobiology of memory and cognition. Presents the findings of anatomic and physiological studies of monkeys that have led to discoveries about the structure of working memory. (MCO)

Discusses how the sun's reflection from water offers a means for calculating sloped of waves. Experiments using angles of reflection from a tilted mirror are suggested and explained. A method of counterbalancing dominoes in a stack beyond the edge of a table (using Euler's constant) is also described. (DH)

Discusses the physics behind making ice cream in a hand-cranked ice cream maker. Ingredients in the maker are cooled and hardened by a bath of ice, water, and rock salt. Several experiments to investigate the variables involved in preparing the ice cream (and related desserts) are included. (JN)