. Elementary and dental radiography / by Howard Riley Raper . Fig. 832. The film holder shown in Fig. 331 in Fig. 333. Another view of the film holder in position. 3o6 DENTAL RADIOGRAPHY tippingthe tube. It is not necessary to tip the tube, as it is shifted,in order to have the X-rays strike the object andplate at the proper angles—at the angles at which theeyes of an observer would see the object, because theX-rays emanate from the focal point on the target in diverging lines in alldirections. So the same X-rays are not used to make the second picturethat are used to make the first
. Elementary and dental radiography / by Howard Riley Raper . Fig. 832. The film holder shown in Fig. 331 in Fig. 333. Another view of the film holder in position. 3o6 DENTAL RADIOGRAPHY tippingthe tube. It is not necessary to tip the tube, as it is shifted,in order to have the X-rays strike the object andplate at the proper angles—at the angles at which theeyes of an observer would see the object, because theX-rays emanate from the focal point on the target in diverging lines in alldirections. So the same X-rays are not used to make the second picturethat are used to make the first. If they were, it would be necessary totip the tube to make them strike the object and the plate at the properangles. (Observe lines G and H of Fig. 327.) When using a compres-
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