Show I j WIRELESS PHONING I I i POULSEN DECLARES VOICE WILL J f1 4 CARRY ACROSS SEA 9i t m Inventor Tells of 250 Mile Test i 5 1 Loss of powcr by Undamped l lf Waves Less Than In Sparkling ld Spark-ling Waves of Wireless 1 > se I I i Copenhagen Tho wonderful achievement O t II + I I achieve-ment of Valdomar Paulson chronicled 1 f t in tho newspapers of the world a few It f days ago of carrying on a conversation + k of wireless telephony between Lyng by and Welsonseo was the result of mi years of experimental work Mr Paul sen assisted by a staff of Danish engineers en-gineers has been at work for a longtime long-time In undertaking to make telephoning telephon-ing by moans of his undamped and continuous waves practicable and useful use-ful In commercial transactions When Mr Paulson had about finished fin-ished his work with the wireless telegraph tele-graph he had become convinced that tho transmission of oral human speech through tho air was possible and at groat distances If ho could contract con-tract an apparatus for transmission and recording sufficiently strong and powerful He began experimenting at once at his wireless station at Lyng n by five miles from Copenhagen and demonstrated that wireless telephoning telephon-ing could be carried on over considerable consid-erable distances without losing anything any-thing In clearness and distinctness Having made this demonstration Mr Ioulpcii undertook to Improve his apparatus ap-paratus and almost ovory day increased In-creased the length of tho line over which he held conversations with his assistants Finally he had come to have so much confidence In his system that ho undertook the risk of trying to speak over a distance of 250 English relies that being the distance from Lyngby to WolBciiBoa near Berlin When Mr Ioulscn at his station at Lyngby clearly heard tho voices of his assistants assist-ants and understood distinctly all that they were saying to him from their station at Welscnscc ho was overjoyed over-Joyed There was a perfect exchange of conversation between tho two stations sta-tions The difference between the sparkling spark-ling wireless waves and Mr Poulsens undamped wireless waves accounts for the great result which Mr Poulsen has achieved Mr Poulsen himself defines tho difference as follows Tho wireless sparks aro to bo compared com-pared to tho shell from a big gun When fired you get an enormous blow like that caused by an explosion but the force of this blow Is lost after a short time tho undamped waves produce a sort of singing vibration of enormous rapidity and they go on their way around tho globe with the same force as that with which they leave the transmitting apparatus Nothing can stop them not oven tho highest mountain They cannot go through tho mountain but they go singing over it and then pass along until they reach tho receiving apparatus appara-tus to which they are appointed It will be easier for tho waves to cross tho Atlantic and of course tho North sea than to go from Weisenseo to Lyngby The station at Lvngby is unfortunately situated for wireless telephone conversation especially with the station at Wolscnsce which also Is badly situated and equipped Valdemar Poulsen who is only 38 I years old Is the son of a Judge in tho high criminal court of Copenhagen Ho Is a very modest man and has not as yet developed any business in his telephonic work Ho is a singularly silent man but when anyone expresses ex-presses an Interest In his work ho is willing to explain It to him to the best of his ability and with a neverfalling enthusiasm |