In place of the alternating current, Mr. Brown finds that a revolving permanent magnet can be used to produce the alternating magnetisation of the pole pieces of the sensitive tube or coherer.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
We must next direct attention to those wave-detecting devices which depend upon magnetisation of iron, and here we are able to record recent and most interesting developments.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
It is important to understand the change which takes place in this Sacrament, for it is more than the magnetisation previously explained, though this also is wrought.
"Esoteric Christianity, or The Lesser Mysteries"
Annie Besant