Novel monochromatic optical density meter.
A novel monochromatic optical density meter is described for use with radiographic films. The principles of the instrument are outlined together with a brief description of the construction of a prototype model. The calibration of the meter shows high accuracy (r = 0.9999) in the optical density range 0-1.5 OD when compared to standard neutral density filters.
Dumville
J
J
Department of Physics, Newcastle Polytechnic, Newcastle-upon-Tyne, UK.
Clark
D J
DJ
Byrne
P O
PO
D055095:Optics and Photonics; D014962:X-Ray Film