England. The magneto-electric machine used was con- gine revolved 160 soft iron cores surrounded by coils of wire such engines have been made, only to demonstrate the ccn-| structed by Professor Frederick H. Holmes. The following near the poles of the magnets about 100 times a minute. The clusion… … cerned, In prac- heat) capable of GRAMMES NEW ELECTRIC LIGHT MACHINE. tice, however, he raising 335 gram- found it most ad- of 1,500 revolutions a minute, it melted a cylindrical iron rod 1,060 gramm es of water 1° centigrade. The balance,5’75, is 15 inches long and} of an inch in diameter, which…
Internet Archive · Public domain (published before 1931). Free to use for anything.
