A manual of X-ray technic by Arthur C. Christie

By Arthur C. Christie

Excerpt from A handbook of X-Ray Technic

Every X-ray Operator is advised to make himself completely conversant in the main points of building of the actual equipment with which he's operating. he's then in place to maintain it always at its element of utmost potency. along with his equipment in good shape he can then steadily grasp the small de tails so necessary to reliable X-ray paintings, and with perform in reading radiograms he'll ultimately gather skill to correctly interpret them and to be able to arrive at right diagnoses.

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Extra resources for A manual of X-ray technic

Sample text

Received it is usually found to be of relatively low vacuum, but after being used a few times it reaches its point of maximum usefulness. PRODUCTION OF RONTGEN RAYS The vacuum then seems for to remain about stationary some time and then gradually increases reaches a point where is 19 used. Finally the it until must be lowered every time vacuum becomes can no longer be lowered so high that it it it sufficiently to allow the current to pass. Directions for Regulating the Vacuum, —If the current cannot pass through the tube on account vacuum of the high positive former.

Down — Ring type The transformer transformer, is a step-up or step- depending upon whether the number of turns than For Rontgen-ray work the step-up secondary has a greater or the primary. of transformer. less EXCITING THE RONTGEN-RAY TUBE transformer mer is is The necessary. coils surrounding a ring-shaped core of The transformer may be iron. ring type of transfor- showing the primary and illustrated in Fig. 16, secondary 41 type, in which the primary of the shell or jacket and secondary coils are surrounded by laminated masses of iron, which, from an electrical standpoint, constitute the core.

1 from the circuit and reduces the amount of resistance, thus increasing the strength of the current. EXCITING THE RONTGEN-RAY TUBE Resistance may thus 49 be gradually reduced by shifting 12 to successive points until the last one Fio. —Rheostat. the current flows directly from H through the mov- able arm to B, the rheostat no longer being in the circuit. CHAPTER VI. RoNTGENOGRAPHY. The Rontgen ray acts upon sensitized plates like ordinary light, therefore the making of rontgenograms has much in common with photography.

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