(I) MR. KEMPSON'S book on magnetism and electricity is based on the course given to the science forms in the Upper School at Rugby. The ground covered is fairly extensive, and the matter is dealt with ...

THE editor offers this volume as a satisfactory introduction to the science, both for students and for “the man in the street.” So far as the former is concerned, the claim may be dismissed at once; ...

For electricity to flow, everything needs to be connected in a big ring. It’s called a circuit. For example, the lights in most houses and flats are part of a circuit controlled by the consumer unit, ...