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Updated: June 23, 2025
These electric waves have been named "Hertzian waves," in honour of their discoverer; but it remained for Marconi, who first conceived their value, to put them to practical use. But for a year he did not attempt to work out his plan, thinking that all the world of scientists were studying the problem. The expected did not happen, however.
Now, this home battery here ready to print is the main steam. The coherer is the valve, always ready to be turned on. The Hertzian wave is the child's hand that turns it." "I see. That's marvellous." "Marvellous, isn't it? And, remember, we're only at the beginning. There's nothing we sha'n't be able to do in ten years. I want to live my God, how I want to live, and see it develop!"
I have stated that our actual commercial application of the etheric waves extends from the ultra-violet waves used in photography, and measuring only 1/254,000 of an inch, to those measuring many miles employed in wireless telegraphy; but this practical application by no means exhausts the conceivable possibilities of etheric vibrations; for not only do we find a gap of five octaves of as yet unknown waves between the dark heat group and the Hertzian group, but mathematically there is no limit to the greatness or smallness of the waves, and the scale may be prolonged indefinitely in either direction.
What are now called "Hertzian waves" are waves apparently identical with light waves, but of much lower pitch or period. In his experiments Hertz showed that, under proper conditions, electric sparks between polished balls were attended by ether waves of the same nature as those of light, but of a pitch of several millions of vibrations per second.
After that are what are known as the ultra-violet rays, which lie beyond the violet of white light. We also have electric waves, the waves of the alternating current, and shorter still we find the Hertzian waves, which are used in wireless.
The Hertzian waves wouldn't be strong enough to work a great heavy Morse instrument like ours. Let me make it clearer. Do you know anything about steam?" "Very little. But go on." "Well, the coherer is like a steam-valve. Any child can open a valve and start a steamer's engines, because a turn of the hand lets in the main steam, doesn't it?
"But still, full credit must be given where credit is due, and in that respect it must be acknowledged that Marconi only assembled and perfected to practicable purposes the discoveries and inventions made before his time. "Radio-telegraphy might be briefly traced in the names of Faraday, Maxwell, Hertz the discoverer of the Hertzian rays Righi, Lodge and Marconi.
Practically the same principles which enable the electrician to utilise the "Hertzian waves," or ether vibrations, for the purpose of setting a clock right once a day, or once an hour, will permit of an impulse, true to time, being sent from the central station every second, or every minute, and when this has been accomplished it will be seen that there is no more use for the maintenance of elaborate clockworks at any place excepting the central station.
And as each word fluttered off on its restless Hertzian wings, like a flock of hurrying carrier-pigeons through the night, the woman listened and translated and read, word by word. "Then we go it together you and I for all it's worth!" Keenan was saying, with his face near hers and his hand on her motionless arm. "Listen," she said sharply.
There was a silence of a minute or two, and then the mysterious Hertzian voice lisped out once more. "Description not forwarded by Embassy man and wife are wanted for robbery at Monte Carlo also at Genoa name Durgin or Durkin." The listening man and woman looked at each other, and still waited. "Oh, this is luck!" said the listener, fervently, as he drew a deep breath. "This is luck!"
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