ls are to be wound upon a tube builtup of cartridge paper, wrapped around acylindrical stick J-inch in diameter. The tubeis to be S inches long and the paper to bewound on until it is y^-inch thick, making thetube i inch outside diameter. Each turn, or 8 SOMETHING ABOUT X RAYS layer of paper is to… … i ..L... FIGURE I. wood, thoroughly boiled in paraffin, of theshape and dimension indicated in the followingsketch. (See Fig. i). These pieces are placed upon the ends of thepaper tube and glued to it solidly. Two holes are to be drilled in one of the endpieces, just below the tube, for the purpose…
X-rays · Fluorescence
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