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Updated: June 23, 2025
It was Professor R. Threlfall who seems to have been the first to clearly propose, in 1890, the application of the Hertzian waves to telegraphy, but it was certainly Sir W. Crookes who, in a very remarkable article in the Fortnightly Review of February 1892, pointed out very clearly the road to be followed.
In the presence of unscrupulous competition, resulting in the flinging out of Hertzian wave vibrations promiscuously, for the purpose of destroying a rival's chances of obtaining satisfactory connections, it would be necessary to make rather more complicated arrangements of a nature analogous to those of the puzzle lock.
One of his Italian teachers was Professor Righi, who had made a close study of the Hertzian waves, and who was himself making no small contributions to the advancement of the science. From him young Marconi learned of the work which had been accomplished, and of the apparatus which was then available. Marconi was a quiet boy almost shy.
"As you know, by the use of an aerial pole, messages may be easily received from any number of stations," continued Craig. "Laws, rules and regulations may be adopted to shut out interlopers and plug busybody ears, but the greater part of whatever is transmitted by the Hertzian waves can be snatched down by other wireless apparatus.
The radiations oscillating too slowly to affect the eye as light may pass by insensible gradations into the long Hertzian waves of electricity.
"On its own account." "Then let's see if I've got it correctly. Miles off, at Poole, or wherever it is " "It will be anywhere in ten years." "You've got a charged wire " "Charged with Hertzian waves which vibrate, say, two hundred and thirty million times a second." Mr. Cashell snaked his forefinger rapidly through the air. "All right a charged wire at Poole, giving out these waves into space.
Of course those who went before him, who discovered the principles of the electric telegraph made it possible for the Hertzian waves to be utilized in wireless. It is easy to understand the wonders of wireless telegraphy when we consider that electric waves transverse space in exactly the same manner as light waves.
He had felt that call of Soul to Soul, across space, along channels less tangible than Hertzian waves themselves, yet bearing its broken message, which later events had authenticated and still later cross-questioning had doubly verified.
The First Suggestion Morse Sends Messages Through the Water Trowbridge Telegraphs Through the Earth Experiments of Preece and Heaviside in England Edison Telegraphs from Moving Trains Researches of Hertz Disclose the Hertzian Waves.
He was able enough to see the merit in Marconi's discoveries and generous enough to give him full recognition and every encouragement. The apparatus was first set up in the General Post-office in London, another station being located on the roof but a hundred yards away. Though several walls intervened, the Hertzian waves traversed them without difficulty, and messages were sent and received.
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