With this arrangement, one can obtain two different kinds of results, according to the nature of the Cohering powder placed in the cavity in the diaphragm.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
Secondly, if the metallic powder placed in the cavity is a magnetic metal, the receiver will be somewhat less sensitive, but will work with more precision, because of the magnetic action of the magnet of the telephone upon the Cohering powder.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
This is the first and fundamental incoherence of the theory; life has simply no meaning apart from those functions which we speak of as ministering to life; unless we mean by life the mere Cohering together of the bodily organism-an end more effectually secured without any such complex apparatus, by a stone or by an elementary atom.
"The Faith of the Millions (2nd series)"
George Tyrrell