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Show RADIO EXPERT TALKS TO CLUB H. T. Plumb of Salt Lake j Discusses Interestingly Before Rotarians. Rotary members that were not present at the meeting today mlas-ed, mlas-ed, according to the consensus of I opinion of those present, one of tho moat Interesting talks of the season ' when District Engineer n. T. Plumb of the Genera) Electric companv with headquarters at Salt Lake spoko on the subject of radio Another treat for those present was the whistling of Mrs. D. C. Cranrle, accompanied at tho piano by Miss Mabel Rouse. President Henry Anderson presided presid-ed Superintendent W. Karl Hopkins Hop-kins gave a brief talk on what Rotary Ro-tary meant to him. President Henry Anderaon presided presid-ed and read a letter from a local studio relative to members getting their photographs taken for the Rotary Ro-tary club album free of cost. He also read a letter from Miss Margaret Mar-garet Stev. art relative to tho organization organ-ization last Saturday night at tho Weber club of tho Business I'rofea- Islonal Women's club. Miss Stewart i was elected president. He announced announc-ed also that tha Roys' work committee com-mittee would meet at the Weber club I tonight, GIVES HISTORY. Mr. Plumb began his address by Hatching briefly the history of radio. Icalllng attention to the fact that i Clerk Ma::we, the famous r.ngllsh I mathematician, had predicted It In 1867 and that by 1S83 it had been demonstrated by II rtl who discovered discov-ered the iiortr.ian waves. One year late r, the speaker said Marconi suc-cci suc-cci ded in sending message by radio ovr a distance of two miles in Italy then for a diBtanco of nine miles, but ho was not rewarded for his discovery; In fact, thC speaker said. ) the Italian people thought him crazy i It was when he went to England In 1896 and succeeded In sending messages across the Thames river that Be was recognized and sponsored spon-sored by Priest, head at that time Of the postal service In England Ho cams to America in 1 1 l and; listened for tho sending of tho letter let-ter ' S" which ho heard and an- . nouncou ana iy jyu& rauio was psuifi used commercially, he said. R Dio PHON i 8. They telephoned by radio betwet n Washington anil Paris, a distance of 3.700 miles, in 1906 and from Washington Wash-ington to Honolulu, a distance of 5.00a miles. ln the same year. Relative to what radio was. the speaker said he did not know and he had I n unable to find anyone who did know, ho said Ho told his hearers that ho would attempt to explain II by using as Illustrations I the analogy apparent!) existing bo-l-tween radio and water, sound and ' light wa 1 1 He spoke of how waves would be produced in a pond of water in case a rock wi re tossed In and how they Would raJlate from tho central portion por-tion of the disturbance to the shore line oven though growing weaker and weaker. The water, he said, which was the medium of transmission, did not move as ahown by the fact that chip3 floating on It would maintain relatively their same positions despite de-spite the waves, Ee then called attention to sound Waves, explaining that the air was the medium through which the sound waves traveled and called Pttentlon vibrated. LIGHT SPEEDY. At about that time J. H DeVlne, seated near, struck a match to light his pipe and the speaker turning to him and pointing to the burning match, explained how light travel. 1 stating that It would encircle the glob eight limes in one second Stepping to the piano he thon 11-lUStrated 11-lUStrated on tho keyboard, using middle C to illustrate the vibrations of visible light, the extreme upper register to illustrate tho vibrations of the X-rny called by the letter X, ho suld, because they did not know what it was when they discovered It, and the lower notes to Illustrate the commercial sending itationa of radio and those used slightly higher I up the goals by the amateurs. To date the speaker said mor;' than l1 0,000 lives have been saved through the use of radio. There, arc at present some 36,000 amateurs that have sending stations; about ROO.OOO ilhat have receiving stations and there are ioo broadcasting stations. About 20 per cent of all International Interna-tional communication is now done by radio, he aatdj und there are 9ix main internal radio paths all owned In the United States and operated. He described briefly tho use of radio in the future and what It might be expected lo do in tho city home, the city proper and the wild-I era. -vs, between nations, in tho hitB-IneM hitB-IneM and educational world and for the purposes of amusement He :io! touched upon the ueo of radio in the commercial world jn the future. |