CHAPTER VIII

THE SMALLEST WORKERS

The relative size of atoms and electrons, p. 148--What is electricity? p. 149--Franklin's one-fluid theory, p. 150--Modern views, p. 153--Cathode rays and the X-ray, p. 156--How electricity is developed, p. 159--The work of the dynamical current, p. 162--Theories of electrical action, p. 165--Practical uses of electricity, p. 168.