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THE INFANCY OF RADIOLOGY
THE HISTORY OF INDUSTRIAL RADIOLOGY
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absorption coefficient Akad Alloys Aluminum Application of X-Rays atom atomic weight BERTHOLD Boiler cathode cavities cent Chem Coolidge Tube cracks darkroom defects density deut developed distance Eisen Elec electric electron energy Engrs Examination of Welds exograph exposure fluorescent fluoroscopic focal spot Foundry fusion G. E. Rev gamma rays Giesserei H. R. ISENBURGER high-voltage inches Industrial Radiography industrial radiology Inspection of Welded Inst installation intensifying screens intensity inverse-square law Iron Age kilovolts Leipzig light marker Mech Metal Radiography Metallbearbeit Methods negative Nondestructive Testing object operation penetrameter penetrating power photographic Phys pipe plate positive Pressure Vessels Proc produced radiation radio radioactive Radiographic Inspection radium Roentgen scattered secondary rays shown in Fig Stahl Steel Castings surface tank Tech technique Testing Materials thickness Thorium Trans transformer transparent U. S. Patent valve tube Verl voltage wavelength Welded Seams WIDEMANN X-Ray Equipment X-Ray Examination X-Ray Inspection X-Ray Testing x-ray tube