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It is not possible to quote here all the researches undertaken with the same purpose, to which are more particularly attached the names of S.W. Wilkins, Wheatstone, and H. Highton, in England; of Bonetti in Italy, Gintl in Austria, Bouchot and Donat in France; but there are some which cannot be recalled without emotion.
'In truth, he wrote in a letter, after his first interview with the Professor, 'I had given the telegraph up since Thursday evening, and only sought proofs of my being right to do so ere announcing it to you. This day's enquiries partly revives my hopes, but I am far from sanguine. The scientific men know little or nothing absolute on the subject: Wheatstone is the only man near the mark.
At this period Wheatstone made numerous experiments on sound and its transmission. Some of his results are preserved in Thomson's ANNALS OF PHILOSOPHY for 1823. He recognised that sound is propagated by waves or oscillations of the atmosphere, as light by undulations of the luminiferous ether.
The telegraph, which has given the world a new nervous system, being less an invention than an evolution, had from the labors of Prof. Joseph Henry, in Albany, and of Wheatstone, of England, become, by Morse's invention of the dot-and-line alphabet, a far-off writer by which men could annihilate time and distance.
In 1837 Charles Wheatstone and William Cooke took out a patent for the world's first Five-needle Telegraph, which was installed between Paddington railway station in west London and West Drayton station a few miles away. The five copper wires required for this system were embedded in blocks of wood.
In 1843 Wheatstone communicated an important paper to the Royal Society, entitled 'An Account of Several New Processes for Determining the Constants of a Voltaic Circuit. It contained an exposition of the well-known balance for measuring the electrical resistance of a conductor, which still goes by the name of Wheatstone's Bridge or balance, although it was first devised by Mr.
When the Wheatstone Automatic Sender is employed with these systems about 500 words per minute can be sent through the line. Press news is generally sent by night, and it is on record, that during a great debate in Parliament, as many as half a million words poured out of the Central Telegraph Station at St. Martin's-le-Grand in a single night to all parts of the country.
Wheatstone and Cooke proposed to join forces with the Morse patentees in America, but this proposition was rejected, although Morse seems to have been almost tempted, for in a letter to Smith he says: "I send you copies of two letters just received from England. What shall I say in answer? Can we make any arrangements with them? Need we do it?
"This was an unexpected triumph to me, since I had heard from one of our passengers in the Baltic that in the East Indies they were reluctant to give any credit to America for the Telegraph, claiming it exclusively for Wheatstone.
But the greatest number of sun-pictures we see are the photographs which are intended to be looked at with the aid of the instrument we are next to describe, and to the stimulus of which the recent vast extension of photographic copies of Nature and Art is mainly owing. THE STEREOSCOPE. This instrument was invented by Professor Wheatstone, and first described by him in 1838.
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