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WHEN PLANETS IN THEIR TRAVELS AROUND THE SUN" ARRIVE IN THE RELATIVE POSI- TIONS SHOWN HERE, MAGNETIC STORMS APPEAR ON EARTH Magnetic Storms Directly Related to Positions of the Planets Analyst at RCA Communications, Inc., Reveals Findings After Five-Year Study. May Lead to Long-Term Predictions of Radio "Weather" Changes. EVIDENCE that a direct rela- tionship exists between majr- nctif storms on earth and the posi- tion of phmets with respect to each other and the sun was disclosed recently by John H. Nelson, radio- wave analyst of RCA Communica- tions, Inc. Findings of Mr. Nelson support- ing this new approach to the cause of forces that disturb world radio communications appeared for the first time as a documented report in the current issue of the RCA Revieir. a scientific quarterly of the Radio Corporation of America. Heretofore, sunspots and allied ac- tivity on the solar surface have been considered prime causes of mag- netic storms that bombard the earth. Mr. Nelson's report suggested that these disruptive forces may be forecast months or even years ahead of their materialization, thus permitting ample time to select the best radio channels to avoid cur- tailment of traffic. Based on Mr. Nelson's predic- tions for the 1951-'.52 winter sea- son, selection already has been made by RCA for the best working radio routes and frequencies of its world- wide radiotelegraph circuits to be used under the radio weather con- ditions forecast for that period. The conclusions reached in Mr. Nelson's report were the result of nearly five years of studying radio- wave behavior in relation to sun- spots and the movement of the planets. Using a si.\-inch telescope atop an RCA Communications building in the heart of New York's financial district, he daily plotted the position and characteristics of sunspots on the solar surface. It was during the observation of sunspots that Mr. Nelson became convinced that, besides their ac- tivity, other forces acting upon the sun also affected magnetic weather conditions upon the earth's surface. This conviction led him into re- search involving the e.xact position of planets with respect to the sun. By plotting the course of the six inner planets of the solar system on a daily basis, Mr. Nelson found that: 1. When two or more planets are at right angles to each other, or in line on the same side of the sun—or in line with the sun be- tween them — magnetc disturb- [RAPIO AGE 3]