Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 50
a block of asbestos or firebrickwas placed between the metal blocks, very little heat wouldflow from A to B, on account of the high heat-resistingproperties of asbestos or firebrick. Similarly, all matteroffers a certain amount of resistance to the flow of elec-tricity ; that is, tends to prevent… … Fig. 40.—Battery cell connected to an iron and a copper circuit. experiment can be made to test the heat-conducting proper-ties of copper by taking equal lengths of copper and ironwire, using equal cross-sections in either case. No. 10 orNo. 8 is a good size, and about 8 in. in length. Take one…
Electric machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-108-31.webp)
