. Elementary and dental radiography / by Howard Riley Raper . Fig. 65. D D D, direct ray. S S. secondary ray. P P, Fig. 66. D D D, direct rays. S S, secondary rays. P P, part. might strike the part also. (Fig. 66.) The diaphragm is a piece of leadwith a hole in it, situated, as a removable part of the tube stand, betweenthe X-ray tube and the cone, cylinder, or square. (Fig. 328.) CHAPTER Radiographs. The X-ray picture is variously called radiograph, skiagraph, Roent-genograph, radiogram, skiagram and Roentgenogram. The word radi-ograph is a combination of a Latin and Greek wo
. Elementary and dental radiography / by Howard Riley Raper . Fig. 65. D D D, direct ray. S S. secondary ray. P P, Fig. 66. D D D, direct rays. S S, secondary rays. P P, part. might strike the part also. (Fig. 66.) The diaphragm is a piece of leadwith a hole in it, situated, as a removable part of the tube stand, betweenthe X-ray tube and the cone, cylinder, or square. (Fig. 328.) CHAPTER Radiographs. The X-ray picture is variously called radiograph, skiagraph, Roent-genograph, radiogram, skiagram and Roentgenogram. The word radi-ograph is a combination of a Latin and Greek word meaning ray andwrite or record. The word skiagraph (spelled also sciagraph) is a com-bination of two Greek words meaning sliade or shadow and write or re-cord. The word Roentgenograph is a combination of a proper , and the Greek word meaning write or record. The terminalgram occurring in the words radiogram, skiagram and Roentgenogram—as well as the more common words such as telegram, program, epi-gram, and others—is of Greek origin and denotes that which is writtenor marked. The use of the X-ray
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