I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 395
§8 31. Magnetic substances are those substances which,although not in themselves magnets, that is, not possessingpoles and neutral lines, are, nevertheless, capable of beingattracted by a magnet. In addition to iron and its alloys,the following elements are magnetic substances: Nickel,cobalt,… … //^//;/i-(///ii;\\Sy;y:^--^^.<-s^^i1ni.\\M\vViO 32. The space surrounding a magnet, in which any magnetic substance will be attracted or repelled,is called its magnetic field, or, simply, itsfield. Magnetic attractions andrepulsions are assumed to act in adefinite direction and along imag-inary…
Bookkeeping · Textile fabrics · Textile factories
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-86-12.webp)
