Standard print-out proofing paper, preprinted with an identifying code, serves as convenient densitometer. Exposure to light darkens the paper and gives a measure of the density of the resultant photographic image or the total amount of exposure sustained by the paper.
Coded photographic proof paper could serve as convenient densitometer
1967-11-01
Miscellaneous
No indication
English
NTRS | 1967
|NTRS | 1972
|BDM: Bone Densitometer Using Ultrasound Technique
British Library Online Contents | 1996
|Densitometer calibration is key to accurate NGL measurement
Tema Archive | 1989
|X-ray densitometer for use in plasma streams
AIAA | 1963
|