IN this the first volume of what will evidently be an elaborate work on practical physics, the authors have treated of general physical processes only, i.e. of the methods employed in the laboratory ...

Judith S. Gillies’ article about a fun/educational TV program delights me (“Learning to Make the Difficult Easy,” Jan. 2). Shades of Julius Sumner Miller! In the mid-’50s, he had a program on TV every ...