. X-rays simply explained : a handbook on Röntgen rays in theory and practice . \ / / / ■- \ \ Fig. 4.—Directions of the cathode stream (dotted) and X-rays (dot and dash) produced in a focus tube. {Note.—The X-rays pass through the space occupied by the cathode stream, and have only been omitted there to avoid confusion.) (2) The cone of cathode rays is fainter andfocuses at a greater distance, producing a bright redspot on the dull red surface of the glass-fluorescence is greater and there is lessgaseous luminosity. Resistance = 1| in. of air. (3) The cone of rays is inv
. X-rays simply explained : a handbook on Röntgen rays in theory and practice . \ / / / ■- \ \ Fig. 4.—Directions of the cathode stream (dotted) and X-rays (dot and dash) produced in a focus tube. {Note.—The X-rays pass through the space occupied by the cathode stream, and have only been omitted there to avoid confusion.) (2) The cone of cathode rays is fainter andfocuses at a greater distance, producing a bright redspot on the dull red surface of the glass-fluorescence is greater and there is lessgaseous luminosity. Resistance = 1| in. of air. (3) The cone of rays is invisible, there is a faint 40 X-RAVS SlMlLV ) iiohulous ii^UiW in fiDUl. cd tlu iinli-caLliDtii, the lluor-OHronco is more brilliant, and tlu; re8iKtanco = IJ ail. (4) The nebulous ^low has cic].! up tli(» front andover tlu; back of (he anode, detaching itself ;ind foi in-in<^ a faint elond behind The lluoreseenee is atits niaxinnun and the anti-cathode i« r«d-hot at itscentre. (o) There is now a su<lden change. All trace ofthe ndtnlons cIimuI li
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