ParallelPig

Friday, November 19, 2004

Densitometer

Device that measures the density, or the degree of darkening, of a photographic film or plate by recording photometrically its transparency (fraction of incident light transmitted). In visual methods, two beams of equal intensity are used. One is directed through the plate, while the intensity of the other is adjusted by an optical wedge, by an iris diaphragm, or by moving

0 Comments:

Post a Comment

<< Home