Describes the construction and use of an inexpensive, homemade polarimeter which can analyze optically active compounds. Ideas for activities using the apparatus are suggested. (JN)

Describes kinds of science equipment needed for elementary schools that do not have to be purchased. Most can be collected from homes. (PS)

Uses photomicrographs to illustrate the advantages of simple phase optics for microscopy in school biology teaching. (AL)

Describes a working model of a Foucault pendulum at intermediate latitudes constructed of a steel drill rod with a steel ball attached at one end. The rod makes an angle of 45 degrees with the rotation axis of a horizontal turntable. The vibrating system is the same as that which led Foucault to construct his first gravity pendulum. (LC)

Explains the mechanisims of mechanical and electronic counters. Lists specifications required for ordering. (EB)

European travel can provide an intimate view of the implements and locales of great discoveries in physics for the knowledgeable traveler. The four museums at Cambridge, London, Remscheid-Lennep, and Munich display a full range of discovery apparatus in modern physics as outlined here. (Author/TS)