f platinum, and both are in communicationwith the exterior of the tube by platinum wires sealed through theglass. The anti-kathode acts also as the anode of the system. Thewire stems of both electrodes are provided with sleeves of glass tube,which tend to concentrate the discharges at their… … Fig. 2.—Focus Tube* (Original Model of Jackson). vacuum tube, are thrown off in minute particles, and are depositedas a film upon the adjoining parts of the wall of the tube. For the anti-kathode a dense and infusible metal is required, andplatinum is very generally used. Osmium has been employed…
X-rays · Radiography
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