This is another great month for evening observing as four planets continue to remain easily visible. Venus, Mars, and Saturn can be viewed over the western horizon, and Jupiter is shining high over the southeastern horizon. Opportunities will also exist for using binoculars or low-power telescopes to observe conjunctions between the planets, the…

A device designed to demonstrate the dependence of viscosity on temperature and to check the validity of the exponential relationship is described. The device has the advantage of versatility as it can be adapted to different types of viscosimeters.

Describes the construction of a simple accelerometer and explains its use in demonstrating acceleration, deceleration, constant speed, measurement of acceleration, acceleration and the inclined plane and angular and radial acceleration. (GS)

New apparatus and equipment are briefly described. Sources of materials are given. (MLH)

Presents notes on three physics experiments on (1) light and lenses, (2) determination of the pVT surface of a freon, and (3) use of an eyepiece with microscopes and telescopes. (RH)

A variety of equipment and instructional materials are briefly described. Included are slides, charts, transparencies, centrifuge, and a spectrometer. (GS)

Describes the preparations to observe the transit of Venus in 1761, the event that opened channels of scientific communication between Europe and America. (LS)

Describes a project which consists of BASIC programs, teacher's guide, and student's notes on six topics for high school biology, chemistry, and physics. Outlines the supply of physics equipment in high schools in three Australian states and presents a procedure for demonstrating small scale temperature inversion in the classroom. (GS)

Describes a fleet of ships which provide a base for laboratory space and equipment shared by many scientists studying the composition and behavior of the sea and its boundaries. (Author/GS)

Reports new equipment, techniques, or materials of interest to teachers of physics. (Editor/CP)

Describes a means of collecting evolved gases which overcomes the usual disadvantages experienced in covering the electrodes with test tubes full of electrolyte solution. (GS)