The upper levels of the atmosphere beyond the reach of balloons are now; to be studied by pointing giant searchlights skyward. The rays, reflected to earth by dust and other particles, will be collected for study with mirrors. Observers of the. Carnegie, Institution, U.S.A., hope thus to glean new facts about the density and composition of the upper air, much as astronomers; learn about stars by analysing star.light.
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Evening Post, Volume CXXI, Issue 68, 20 March 1936, Page 7
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68Untitled Evening Post, Volume CXXI, Issue 68, 20 March 1936, Page 7
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