Medical Radiography and Photography, Bände 29-30Eastman Kodak Company, 1953 |
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Seite 70
... focal points . ) Focal Length - The distance from the center of a thin lens or mirror system to the focus of a distant point on the axis . 1 angles to each other , are not focused in the. FIGURE 3 - Spherical aberration introduced by a ...
... focal points . ) Focal Length - The distance from the center of a thin lens or mirror system to the focus of a distant point on the axis . 1 angles to each other , are not focused in the. FIGURE 3 - Spherical aberration introduced by a ...
Seite 71
... focal length of another mirror in the system . Spherical Mirrors A spherical mirror is a reflecting surface that is part of the surface of a sphere ( Figures 3 and 4 ) . With suitable modifications it can be used with good covering ...
... focal length of another mirror in the system . Spherical Mirrors A spherical mirror is a reflecting surface that is part of the surface of a sphere ( Figures 3 and 4 ) . With suitable modifications it can be used with good covering ...
Seite 74
... focus with catadioptric systems is very small when the rela- tive aperture is large . This is aggravated when the subject - lens distance is only a small multiple of the focal length of the lens . Since , in photoradiographic mirror ...
... focus with catadioptric systems is very small when the rela- tive aperture is large . This is aggravated when the subject - lens distance is only a small multiple of the focal length of the lens . Since , in photoradiographic mirror ...
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Abschnitt 3 | 53 |
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abdominal acromioclavicular articulation anatomy aneurysm angiocardiography angle anteroposterior aorta appearance auricular surface barium birefringent blood vessels bone bronchial arteries camera cassette holder central ray cephalad chest clavicle clinical close-up colon color contrast degrees demonstrated Department of Radiology diagnosis disease Eastman Kodak Company employed epididymis equipment esophagus examination exposure field filters Flexichrome fluorescent fluoroscopic gallbladder gallstones graphic graphs heart Hospital iliac illustrations inches injection joint lateral latex lens lesions ligament light lung Medical Division Medical Photography Medical Radiography mirror normal oblique optical Outfit pathologic patient pelvis photographs plane portion position posterior posteroanterior present Price procedure progeria projection pulmonary artery pulmonary veins radiation radio radiographs radiologist Radiology records result Rochester Roentgen Roentgenol rotation sacroiliac articulation showed shown in Figure skull specimen spherical supine technic therapy tion tissue tube tumor upper vertical vinyl acetate visualized X-ray Film York