PENGARUH PERUBAHAN JARAK OBYEK KE FILM TERHADAP PEMBESARAN OBYEK PADA PEMANFAATAN PESAWAT SINAR-X, TYPPE CGR

Abstract

Have performed research of objects in an image magnification radiograph film. In irradating the
object is done with two variations within the FFD distance and OFD distance. In radiography
magnification sought volue as small as possible in order to approach the size of the original image.
Based on the results of the avarage magnification at adistance FFD 60 cm, 80 cm, 100 cm, 120 cm,
and 140 cm with aech distance OFD 10 cm, 20 cm, 30 cm, 40 cm and 50 cm, value approaching
enlargement most closest original image obtained at a distance of FFD 140 cm with distance OFD 10
cm magnification values obtained 1.08 and for the enlargament of the FFD obtained at a distance of
60 cm with 10 cm spacing value obtained OFD enlargement avarage 1.14 at the change of distance
FFD erlargement and OFD redunce distance, the resultion obtained is getting smaller shadows and
approached the original picture or vice versa on charge FFD distance and OFD irradiation reduced the
object, the greater the enlargement obtained.