Manawatu Herald TUESDAY, JANUARY 8, 1924. TELEPHOTOGRAPHY.

Manawatu Herald, Volume XLVI, Issue 2680, 8 January 1924, Page 2

Manawatu Herald TUESDAY, JANUARY 8, 1924. TELEPHOTOGRAPHY.

NOT only the transmission at a distance of photographs and handwriting, but actual vision at a distance was indicated as a possibility of wireless by M. Edouard Relin at a recent meeting in London of the Royal Society of Arts. AT. Bolin observed that much had been said during the last few years respecting telephotography. For a long time past the inventors had been concerned with experiments in their laboratories and in practical application. The latter had proved how difficult it was to overcome the obstacles which separated the laboratory from practical application, and (bat was the reason why the results, so long expected,, had only now been achieved. To-day the object appeared to have been attained, and it was opportune not only to make it known, but also not lo limit merely to telephotography a result which bad so much wider a scope. Besides (e/ephotography, that was to sav, the transmission at a distance of photographs, it also embraced teleautography, which concerned the reproduction of drawings, and especially of bandwriting itself, by telegraphy. Lastly, there was television, wliieh must not in any way be looked upon as simply an improvement on telephotography, bill constituted .a thing ,|iiilc apart, whirl] was nearly, and would soon be actually, vision at a distance, a problem long considered as chimerical, but- to-day looked on as possible and which to-morrow would be one of (lie realities. The Belin system of telephotography had to undergo many improvements in order to lie not only of practical use, hut- also to respond to the actual conditions of the telephonic system. His system, which was now sufficiently well known, had led to apparatus which was equally adaptable to teleautography, for the use of which (he French postal and telegraph authorities erected the lirsl stations in Paris, Lyons and Strasbourg. Messages thus transmitted were authentic, and even the transmission of short band would probably become general. An alternative application of the- same system permitted absolute secrecy in telegraphic and radio-telegraphic transmissions. Autograph messages had been transmitted by wireless telegraphy in France and America, and quite recently lie was able with the aid of his assistants, to transmit by wireless real photographs in halftones. For several months, the researches in the laboratory at La Malmaison bad shown in principle that television was no longer an impossibility. All the experiments were made with wireless, and M. Belin came to (he conclusion that (lie expected solution of this problem was very near at hand.