Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 166
NUED 167 Question 12. What are the magnetic lines of force? Answer. These words are used in several differentways. The word magnetic is usually dropped for thesake of shortness and lines of force spoken about;Engineers usually say lines. (i) The magnetic force of a magnet seems to liealong certain… … Lines of Magnetic Action around a Bar Magnet. strength we say that there are 10,000 lines of forceto the square inch in that magnet pole. If it exertedtwice that force we would say there were 20,000 lines tothe square inch. Perhaps units of force would be a better name forthis. 168 ELEMENTARY…
Electricity
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
