Abstract
ABSTRACT A brief consideration of some of the fundamental principles underlying the use of the x-ray in diagnosis is somewhat necessary for a full understanding of the reasons for the superiority of this method over the one commonly in use.The x-ray or Roentgen ray is a form of energy originating at the target of a Crookes vacuum tube, generated by the impact of energy from the negative terminal or the cathode. This energy proceeds divergently from its point of origin; it becomes feebler with increasing distance of travel, and it can not be refracted nor reflected from its course. It is said by some that a of rays takes place when passing through bodies of certain density or thickness, but I do not fully subscribe to this; the diffusion of the rays is said to be the cause of lack of clearness in skiagrams of thick parts.
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