0 the use of communication systems that work by sending electric signals through wires or by radio waves:
wireless telegraphy
There is no place here to discuss to a wider extent the relationship between new and older communication technology (mail, telegraphy, personal messengers).
And telegraphy was, respectively, understood as a system of messages and commands, traveling between a periphery and a brain-like center.
Electrical telegraphy works by the alteration of magnetic fields, such that a distant dial may be made to point to specified letters or numbers by controlled fluctuations in electrical current.
Some of the discursive ties opened up in the book are speculative, such as apparent homologies between medical techniques of listening and those found in early telegraphy and telephony.
Such a matter might easily include the provision of torpedoes, aircraft, wireless telegraphy, booms and even submarines.
The straightforward cash auction has been favoured in the great majority of wireless telegraphy auctions throughout the world.
The question is whether that is covered by the requirement for wireless telegraphy.
He has equipped 600 ships with wireless telegraphy.