Describes a simple procedure for making all-round holograms of small objects. (SL)

Classifies experimental error into two main groups: systematic error (instrument, personal, inherent, and variational errors) and random errors (reading and setting errors) and presents mathematical treatments for the determination of random errors. (PR)

Explains how to demonstrate the following: the hysteresis effect and the existence of domains in Rochelle salt (sodium potassium tartrate); diffraction experiments using a slide with multiple slits; and an analogue technique for learning terminal velocity. (GA)

Describes experiments in ice physics that demonstrate the behavior and properties of ice. Show that ice behaves as an ionic conductor in which charge is transferred by the movement of protons, its electrical conductivity is highly temperature-dependent, and its dielectric properties show dramatic variation in the kilohertz range. (Author/GA)

Describes an experiment designed to measure the forces between charged parallel plates, and determines the relationship among the effective electrode area, the measured capacitance values, and the electrode spacing of a parallel plate capacitor. (GA)

Describes the experiment and the apparatus used to measure electrostatic forces between charged parallel plates and points out possible pitfalls in constructing the apparatus. (GA)

Suggests the level at which errors could be treated in sixth form physics (England) and then describes two design exercises in which rough estimations of errors are used in the making of design decisions. (Author/PR)

Describes an experimental technique for determining liquid dielectric constants by measuring the rise of the liquid in a paralled-plate capacitor at a known voltage. (MLH)

Gives a brief description of open-circuit wind tunnels of rectangular cross-section and of how expanded polystyrene can be used to build a small one. (Author/GA)

Describes a circuit which allows vectors and combinations of vectors to be illustrated by means of bright segments appearing on a c.r.o. screen. Explains how to demonstrate dendritic crystalization with cyclohexanol. Presents a circuit which, with the help of a signal generator and an oscilloscope, facilitates the understanding of the electrical…