Lectures on the Electromagnet

by Silvanus Phillips Thompson

An Unabridged Printing To Include Over 70 Illustrations: Historical Sketch - Generalities Concerning Electromagnets - Typical Forms - Polarity - Uses In General - The Properties Of Iron - Methods Of Measuring Permeability - Traction Methods - Curves Of Magnetization And Permeability - The Law Of The Electromagnet - Hysteresis - Fallacies And Facts About Electromagnets - General Principles Of Design And Construction - Principles Of The Magnetic Circuit - Calculation Of Excitation, Leakage, Etc. - Rules For Estimating Magnetic Leakage - Special Designs - Winding Of The Copper - Windings For Constant Pressure And Constant Current - Rules About Winding - Specifications About Electromagnets - Rule About Resistance Of Electromagnet And Battery - Forms Of Electromagnets - Effects Of Size Of Coils - Effect Of Position Of Coils - Effect Of Shape Of Section - Effect Of Distance Between Poles - Position And Form Of Armature - Battery Grouping For Quickest Action - Electromagnetic Magnetism - The Coil And Plunger - Suppression Of Sparking, Etc., Etc.

288 pages, Paperback

First published November 1, 2007

About the author

Silvanus Phillips Thompson FRS was a professor of physics at the City and Guilds Technical College in Finsbury, England. He was known for his work as an electrical engineer and as an author.

Thompson is one of the individuals represented on the Engineers Walk in Bristol, England.

Thompson was elected a Fellow of the Royal Society in 1891 and was elected a member of the Royal Swedish Academy of Sciences in 1894.