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An Explanation of Wireless Telegraphy, Cunard Line, 1904

This article on Wireless Telegraphy was included in the 11 June 1904 Passenger List for the Cunard Line Steamship Etruria on a Westbound voyage from Liverpool to New York.

This Steamer Is Fitted With Marconi's System of Wireless Telegraphy

An Explanation of Wireless Telegraphy

By H. W. B. of the Cunard Line

An Explanation of Wireless Telegraphy

An Explanation of Wireless Telegraphy, Cunard Line, 1904

The more one studies wireless telegraphy the better understanding one gets of the greatness and wonders of nature, and this study brings out very conclusively the fact that in all things we are feeble imitators of this wonderful nature. To make as clear as possible what I mean by this similarity between wireless telegraphy and nature, I want to refer to what the sun is doing for us daily.

This light, which we are so accustomed to using, comes to us in vibrations or waves travelling at the rate of 186,000 miles per second. These waves sent out by the sun, are known as ether waves, and reach the earth in various lengths. Now to return to wireless telegraphy.

We find that by generating an electric spark we vibrate this same ether, and it depends entirely on the amount of power in this electric flash which we generate how far these vibrations will travel. It is by using Mr. Marconi's wonderful inventions that these waves can be harnessed, so to speak, and made to carry the messages from one side of the world to the other. We must bear in mind very clearly that these ether waves are entirely different to sound waves. The former vibrate the air and the latter the ether. So many people ask the question, "

How can you tell where to send a message so that it will reach a certain ship ? "

In answer to this I would ask them to think of the effect of their own voice when speaking ; that anybody can hear them, all around, overhead or underneath. Wireless telegraphy works m precisely the same manner ; these ether vibrations travel in every direction, and in sending a message, say, from one ship to another, the operator first calls the ship he wants to talk with and awaits the reply before sending his message, and while these two ships are in communication no other ships in the radius will interfere, in precisely the same manner as when sending a message over the telegraph lines to-day the operator calls the station he wants, and while all other operators along the line may read what is being sent, they only answer their own calls.

Messages for Passengers on board this Steamer can be sent through the Marconi Stations at Rosslare or Crookhaven, addressed as follows :-


Passenger " ETRURIA,"

Care " Expanse,"


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