Sir William Cecil Dampier-Whetham (1867–1952) was a British scientist and agriculturalist. He was knighted in 1931 for services to agriculture. In this book, which was first published in 1923 as the third edition of a 1905 original, Dampier-Whetham provides an account of the principles of experimental electricity based on the content of a series of lectures given to students at Trinity College, Cambridge. Illustrative figures are incorporated throughout. This book will be of value to anyone with an interest in physics, experimental electricity, the history of education and the history of science.