Mr. POULSEN'S DISCOVERY. . * Paid for the English and American Rights.

Progress, Volume II, Issue 7, 1 May 1907, Page 268

Mr. POULSEN'S DISCOVERY. . * Paid for the English and American Rights.

Cable messages lately reported that a discovery of far-reaching importance in wireless telegraprry had been made by Mr. Waldemar Poulsen, a young Danish electrician. Home files state that Mr. Poulsen's new system was explained at a Queen's Hall meeting, attended by the Duke of Argyle, the Princess I,ouise, and many scientists. By this system, perfect communication has been established between Copenhagen and North Shields (530 miles) with the aid of a mast only 100 ft. high, and with a power of about one kilowatt — roughly one h.p. At this rate a power of only 10 kilowatts would be required for transatlantic communication. Mr. Poulsen solved the problem of producing undamped electric waves of a million vibrations a second, through discovering the peculiar properties of an arc immersed in carburetted hydrogen. Multiplex wireless telegraph}'- will be possible to an almost unlimited extent, as, owing to accuracy of tuning, each particular receiver is affected only by the messages intended for it. Lord Armstrong has paid £100,000 for the English and American rights.