AbstractsChemistry

In the latter part of the eighteenth century only a few substances, such as iron, nickle, and cobalt were thought to possess magnetic properties. Little by little, research work has gone on until now, it is believed that all substances are either attracted or repelled by a magnet. This attraction or repulsion in most substances is extremely feeble. Those that are attracted, Faraday called paramagnetic, and those that are repelled, be called diamagnetic.