the time of illumination, time interval t, during which light-sensitive
fotografich. the material undergoes the continuous action of light.
If the power of radiation (illumination on the emulsion layer)
in the time of illumination is variable, then is distinguished
complete endurance tit is complete and effective endurance tof eff < tit is full of.
Effective v. - time interval, for which on photograph, layer
would fall the same quantity of light, as for complete v., if the
radiated power remained its constant and equal max, to value. If
illumination change on the layer is connected with the type of that
used into fotografich. to the camera of the lock (for example, center,
the lock, whose the lobes they are located in the pupil of objective
or near it), then relation tof eff/.tis complete NAZ of
the shutter efficiency. Efficiency of lock is the greater, the
greater v. and the less carries, the opening of objective. Work
v. to illumination L NAZ. by exposure or with exposure H=.Lt. One and the same exposure can give
several different fotografich. effect depending on relationship L and t; similar fotokhimich. phenomenon is NAZ. nevzaimoeamestimosti by phenomenon. Yu. n.
gorokhovskiy.
