WIRELESS TELEPHONES

Taranaki Daily News, Volume LI, Issue 148, 13 June 1908, Page 4

WIRELESS TELEPHONES

WON DISKS. UP A NEW INVENTION. At Copenhagen the Danes can now listen with pleasure to music played in Jicrliii, aud "a multitude of voices, each with ils owu ether-tone," each clear, distinct, and easy to recognise, can lie transmitted from' Jiristol to iyoiulou by one instrument. The distance of I'M miles between Copenhagen anil Dcrlin is bridged without anything more solid than the iiiy-lcnoiis universal iliud known as ether. Hon this marvel i-accompli-hcd was in pari explained to a London audience by .Mr. Poulsen, in- . veulor and part discoverer of the most perfect form of wireless telegraphy and telephone yet known. His apparatus was shown at work in the lecture, room of the Hoyal Institution. Albemarle Street, W. 'in place of what is known as spark telegraphy. in which every wave of vibration —nt forth grow- less ami liw powerful as il navels' through space, lie ha, made an | apparatus which produces. " continuous ■electrical o-cillatioiis." which keep I heir lore constant, like a stream of water, each driven oil by the power behind it. I his force he can turn to any account. It will write the ordinary code signiniich more distinctly than the cable; its-messages can be photographed, or it can work a telephone of the ordinary sort over an unknown distance. The organ of these irresistible vibrations looks like a glass cylinder wrapped with copper wire. To show ils force a needle was fixed on the top of the cylinder, and fr this, when the dynamo was worked, a curved | feal'h erv mauve wave screamed and crackled. lis yibratioiis were such I hat a taciium lube across the room, representing for the moment the receiver, glowed bright or dim as the llanie ro-c or sank. for another illustration the eurrcul was pa—oil through two men. causing the vacuum glass bulbs, such as are Used for electric light, to burn brightly when held in lie hand of the man farlhe-t from the instrument. A circle of copper wire, when held bv Air. Ton! sen at the proper angle. lir-l smoked. I hen -lowed, then collapsed Willi a Hare, though it was not in contact with anything or anv visible energy. This waIbe fulminating illustration of the coi-o'-al power generated by the new instrument, which can be u-cd for wireless ieb-grapliy or telephony at will, and is worked by a silent apparatus taking up little more space thai) au ordinary uortuuink'nu,