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Updated: June 3, 2025
A magnetic detector was devised by Marconi while other inventors had contrived electrolytic, mercurial, thermal, and other forms of detector, used for the most part with a telephone receiver in order to detect minute variations in the current caused by the reception of the electro-magnetic waves. With one of Marconi's magnetic detectors signals from Cape Cod were read at Poldhu.
The other brothers of our hero are Frank Baden-Powell, who took Honours at Balliol, and is a barrister of the Inner Temple, as well as a noted painter, and Baden F.S. Baden-Powell, Major in the Scots Guards, whose war-kites at Modder River enabled Marconi's staff to establish wireless telegraphy across a hundred miles of South Africa.
By the middle of 1898 Marconi's wireless system was doing actual commercial service in reporting, for a Dublin newspaper, the events at a regatta at Kingstown, when about seven hundred messages were sent from a floating station to land, at a maximum distance of twenty-five miles.
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.
Marconi was not allowed to hold the wireless field unmolested. Many others set up wireless stations, some of them infringing upon Marconi's patents. Others have devised wireless systems along more original lines. Particularly we should mention two American experimenters, Dr. de Forest and Professor Fessenden. Both have established wireless systems with no little promise.
At a meeting of the Society of Arts in May of 1901, Professor Ayrton, commenting on Marconi's system, said that we "are gradually coming within thinkable distance of the realization of a prophecy he had ventured to make four years before, at a time when, if a person wanted to call to a friend he knew not where, he would call in a very loud electro-magnetic voice, heard by him who had the electro-magnetic ear, silent to him who had it not.
These closing remarkable words were actually used by my father, and in view of the marvellous realization of Marconi's hopes in that direction, as well as my own stupendous success in reaching the inhabitants of Mars, was a distinct prophecy.
Now ships frequently send a Marconigram home when they are right in the middle of the ocean; and many lives have been saved through ships in distress having been able to send out wireless messages which have brought other vessels steaming up to their aid. In fact, this invention of Marconi's is, perhaps, the greatest of all modern inventions, and it is but right that it should preserve his name.
His transatlantic triumph came on the 12th December 1901 when the morse letter 'S' was transmitted from Poldhu, in Cornwall and received by Marconi himself at St. John's, Newfoundland, who recorded the historic event in his pocket book simply "Sigs at 12.20, 1.10 & 2.20". The operation of Marconi's transmitter was itself quite spectacular.
That man, then, is more truly "free" whose intellect is informed of and submits to these laws, than is the man whose intellect is unaware of them. Marconi's intellect submits to the laws of lightning and he is thereby enabled to avail himself of them. Ajax is unaware of them and is accordingly destroyed by their action. The Truth, then, makes us free.
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