. Transactions. 4 in. = mm. 3 Ke in- = 1-6 mm. 4 >^2 in. = mm. 5 3^4 in. = mm. Exposures were made on Seed X-ray plates at 20 in. (50 cm.) distancewith Coohdge tube X-117, operated on Scheidel-Western induction coilwith mercury turbine break. The X-ray plate was placed on a sheetof ^-in. () lead. The steel was placed above this and a lead * Research Laboratory, CJeneral Electric Co. WHEELER P. DAVEY 151. 152 RADIOGRAPHY OF METALS cover was placed over the whole in such a manner that the cover andbacking made a complete lead shield for the X-ray plate. (See Fig. 3.)A rectang
. Transactions. 4 in. = mm. 3 Ke in- = 1-6 mm. 4 >^2 in. = mm. 5 3^4 in. = mm. Exposures were made on Seed X-ray plates at 20 in. (50 cm.) distancewith Coohdge tube X-117, operated on Scheidel-Western induction coilwith mercury turbine break. The X-ray plate was placed on a sheetof ^-in. () lead. The steel was placed above this and a lead * Research Laboratory, CJeneral Electric Co. WHEELER P. DAVEY 151. 152 RADIOGRAPHY OF METALS cover was placed over the whole in such a manner that the cover andbacking made a complete lead shield for the X-ray plate. (See Fig. 3.)A rectangular hole in the cover allowed such X-rays as were able to pene-trate the steel to reach the X-ray plate. This afford ed complete protection
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
