This publication is one of a series of information booklets for the general public published by the United States Atomic Energy Commission. Direct energy conversion involves energy transformation without moving parts. The concepts of direct and dynamic energy conversion plus the laws governing energy conversion are investigated. Among the topics…

The text takes a practical approach to the understanding of industrial radiation hazards. It is intended for the layman who requires a basic understanding of the relationship of radiation problems to his own field. Discussion includes such topics as: uses which benefit mankind; radiation energy versus fission energy; effects of excessive radiation…

This document provides a summary history of the individual scientists principally responsible for the development of nuclear physics and a survey of modern utilization of atomic energy. Identified throughout the booklet are postage stamps illustrating each individual and topic discussed. (SL)

The relationship of the mechanics of a falling chimney and a breaking pencil point is presented. A device is discussed that uses a pocket calculator coupled to a telescope to record the angle at which the telescope is pointed. (BB)

Discusses various aspects of fly casting to illuminate the physics of fishing. They include examining whether the bending of the rod propels the fly as a bow propels an arrow and determining how an angler resists the pull of a hooked fish while reeling it in. (JN)

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)

A chart lists types of mechanical motion with mathematical formulas describing acting force, direction of force, velocity, acceleration, and path traversed. (JH)

Some recent experimental results have given a clearer sense of direction and renewed optimism for research on controlled thermonuclear reactions. (Author/DF)

Investigates a sequence of inelastic collisions resulting among three spheres, whose centers are on a line, when at the outset the leftmost sphere is propelled to the right and the other two spheres are at rest. Expressions are obtained for velocity, time, and distance variables. (MLH)

Proposes a simple and low-cost experimental method for measuring atmospheric pressure. Uses a 100mL glass and Boyle's law for ideal gases as the only theoretical requirement. (Author/KHR)

Presents an example demonstrating the quantitative resolution of the hydrostatic paradox which is the realization that the force due to fluid pressure on the bottom of a vessel can be considerably greater or considerably less than the weight of the fluid in the vessel. (JRH)

Attempts an explanation of how "ice spikes" are formed. The spikes are upward protrusions of ice that occur when water expands as it cools in a rigid container of low thermal conductivity. Describes the results of an investigation and includes color photos. (LZ)