Shows that the entropy change during the temperature equilibration of an isolated collection of systems which may exchange heat (but not work) energy is positive when the constant-volume heat capacity of each system is a non-negative function of the temperature. (MLH)

Registrants of college chemistry (Chem 103) whose permanent address indicated they lived in Maryland, Washington, D.C., or northern Virginia, were invited by letter to participate in a pre-course refresher consisting of listening to as many as seven audiotutorial tapes on the basic concepts and calculations of chemistry. Sixty-nine percent of…

Described are several organometallic experiments for the homogeneous hydrogenation of alkenes that could be used in schools. Procedures and expected results are detailed. (RH)

This programed booklet presents ideas related to inductors and inductance--resistance networks. It is designed for the engineering student who is familiar with differential equations and electrical networks. A variety of cases are considered with the idea of developing in the student a broad acquaintance with the inductor response. The booklet is…

This programed booklet is designed for the engineering student who is familiar with the techniques of integral calculus and electrical networks. The booklet teaches how to determine the current and voltages across a resistor, inductor, and capacitor after the switch in a network has been closed. This is a classical problem in engineering, the…

Discusses quantitative, purely geometrical features of field lines; equations are derived for field lines and radii of curvature of field lines for several idealized cases. (MLH)

Explains the necessity for a domain concept in understanding ferromagnetism and discusses various factors influencing the domain configuration in a crystal. (MLH)

Outlines factors to be considered in choosing suitable solvents for non-electrolytes and salts of weak acids and bases. Describes how, in some simple situation, the degree of solubility can be estimated. (Author/DF)