World War II is introducing X-rays into U.S. industry with the same momentous impact with which World War I introduced them into every hospital and doctor's office. Today X-rays are looking for flaws in parts of airplanes, tanks, warships and cannon as systematically as they are used to examine the lungs of new Army recruits.
Ten years of industrial X-ray development have been telescoped into one urgent year of armsmaking. Six months ago, for example, there was only one giant 1,000,000-volt industrial X-ray machine capable of clearly radiographing seven inches of steel. Today there...
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