| Description | A diagram of the apparatus used by Gemmell in his investigations into the magnetisation of steel, cast iron, and soft iron, showing a magnetising coil. This is followed by 11 graphs relating to Gemmell's experimental observations regarding wires made of soft Scottish iron, common wire, charcoal iron, soft steel, cast iron and malleable iron.
Subject: Magnetisation / Metallurgy / Scientific apparatus and equipment
Prints of these diagrams were published in volume 39 of the Proceedings of the Royal Society alongside the paper '“On the magnetisation of steel, cast iron, and soft iron” (being the investigation for which the watt prize of 1884 was awarded by the Senate of the University of Glasgow)'. |