Science: Peacetime Radar

With Army security relaxed, the M.I.T. Radiation Laboratory, U.S. headquarters for radar research, announced more radar news:

¶ Most striking was a radar picture of Manhattan taken through heavy clouds at a low altitude by the latest microwave set (see cut). Plainly showing, in fairly sharp outline, are piers, Central Park, individual buildings.

¶ One microwave set uses radio waves so tiny that they put the finger on raindrops and dampish clouds. A system of such sets could give a precise, continuous map of the weather over the whole U.S., showing airplanes how to...

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