ELECTRIC TELESCOPY.
The remarkable property of selenium, the electric conductivity of which varies enormously under the action of light, is the ground of the belief, which for long has been held by some scientists, that one day it will be possible to construct an instrument by the use of which one may see what takes place at very distant places. In this direction, says the Paris correspondent of the- London “Times,” a great stride forward has been made. It is due to the apparatus which M. Armenguad, the president of the French Society of Aerial Navigation, has just caused to be constructed for the recent exhibition of the Societe Francaise de Physique, an association resembling the British Royal Institution.
The apparatus invented by M. Armeugaud has not completely solved the problem. M. Armengaud firmly believes, however, that within a year, as a consequence of the advance already made by his apparatus, we shall be watching one another across distances hundreds of miles apart.
The apparatus in question is intended to provide a method for the distribution of a moving image so as to admit, through the employment of selenium or of any other photo-electric body, of the transmission of the said image to any distance by telegraphic or telephonic ’wires. The method is based on the principle of the cinematograph, which exists solely
in virtue of the well-known law of the persistency of luminous mpressions on the retina.
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Waipukurau Press, Issue 278, 4 July 1908, Page 6
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238ELECTRIC TELESCOPY. Waipukurau Press, Issue 278, 4 July 1908, Page 6
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