Discusses the inter-relationships between some important temperature scales such as the Celsius scale, the Kelvin Thermodynamic scale, and the International Practical Temperature Scale (IPTS). Included is a description of the 1968 IPTS with emphasis on innovations introduced in the range below 273.15 k. (CC)

The explosion of knowledge is accompanied by implosions in the form of theories which simplify knowledge and make it easier to learn and use. (Editor)

These remarks relate present Communist goals to the teaching of physics and point out the important effect that sciences have on the prosperity of the nation. Physics instructors are urged to pursue those goals by keenly challenging their students. (JH)

An understanding of the lawfulness of phenomena and of scientific method, integral parts of physics, are just two examples of intellectual concepts that will help equip students with a scientific-atheistic world view - one of the goals of communism. It is every teacher's duty to pursue this goal throughout the curriculum. (JH)

This article applies the guidelines of the Twenty-Fourth Congress of the Communist Party - farsightedness and practicality - to problems of content and methodology in physics instruction. (JH)

The author discusses ways of revising presientific ideas among children, using the topic "Changes in Aggregate States of Matter" as a source for specific examples. (JH)

Summarizes some aspects of the environmental impact draft statement prepared to assess the feasibility of liquid-metal fast-breeder reactors in commercial power generation. (CC)

Discusses the historical background of the development of lightning conductors, describes the nature of thunderclouds and the lightning flash, and provides a calculation of the electric field under a thundercloud. Also discussed are point discharge currents and the attraction theory of the lightning conductor. (JR)

Provides a calculation in answer to a student's question relating to the energy of pulses in a slinky. (JR)

Describes a physics course designed to relate to people with interests in fields not closely associated with physics. Guidelines are suggested for teachers who are developing similar courses. (Author/DF)

A course investigating the relationship of scientist to humanity as well as science is described. Student reactions to the initial offering are presented with the possible role of the course in science education. (Author/DF)