Constant-exposure radiography
Abstract
Constant exposure (product of irradiation and time) results show that the quantity and quality of information registered on a radiographic plate depend chiefly on the quantity of photons impinging on the surface; a fast film receiving an equal number of photons will present the same information as a slow film (disregarding film noise and film handling technique). Slowness rather than fineness is regarded as the essential property of fine-grained film. Film speed or emulsion speed is best exploited in reducing the potential, rather than in shortening the exposure, according to the interpretation of the results.
- Publication:
-
8th World Conference on Nondestructive Testing
- Pub Date:
- 1976
- Bibcode:
- 1976ndt..confQ....R
- Keywords:
-
- Nondestructive Tests;
- Photographic Recording;
- Radiography;
- Photographic Emulsions;
- Photographic Film;
- Photointerpretation;
- Instrumentation and Photography