What aspects of spatial relations influence speakers' choice of locative? This article presents a study of static spatial descriptions from 24 languages. The study reveals two kinds of spatial terms evident cross-linguistically: specific spatial terms and general spatial terms (GSTs). Whereas specific spatial terms--including English…

The "quantum efficiency" (QE) is an important property of a light detector. This quantity can be determined in the undergraduate physics laboratory. The experimentally determined QE of a silicon photodiode appeared to be in reasonable agreement with expected values. The experiment confirms the quantum properties of light and seems to be a useful…

We present a toy model of quantum electrodynamics (QED) in (1 + 1) dimensions. The QED model is much simpler than QED in (3 + 1) dimensions but exhibits many of the same physical phenomena, and serves as a pedagogical introduction to both QED and quantum field theory in general. We show how the QED model can be derived by quantizing a toy model of…

The third annual report (covering the 18-month period from January 1969 to June 1970) of the Stanford Physics Information REtrieval System (SPIRES) project, which is developing an augmented bibliographic retrieval capability, is presented in this document. A first section describes the background of the project and its association with Project…

This textbook is a course in mechanics, first of a three-volume series on natural philosophy. Part one discusses the mechanics of solids and part two discusses the mechanics of fluids.

Very generally and briefly reflects a teacher's feelings and impressions of what it is like to teach physics in a secondary school. (PR)

Discussion of women's role as scientists. General statistics are given concerning the number of women in the various professions and their academic backgrounds, employment, and productivity. Influences of social attitudes and structures are discussed along with career opportunities. (DF)

Examines the widespread view that it was the crucial Michelson-Morley experiment that led Einstein to formulate the special relativity theory. From Einstein's writings, evidence is presented that no such direct genetic connection exists. The author suggests that the historian of science must resist the experimenticist's fallacy of imposing a…

Reports on project intended to establish how electrical resistance, Hall voltage, and magnetoresistance change when a thin film specimen is subjected to mechanical strain. Found resistance of semiconducting film of indium arsenide and indium antimonide decreases with tension and increases with compression. (LS)