Dark current is the constant response exhibited by a receptor of radiation during periods when it is not actively experiencing radiation. In physics Dark Current refer to: The relatively small electric current that flows through a photosensitive device when no photons are entering the device.
Is the reflection of light from a surface such that an incident ray is reflected at many angles rather than at just one angle as in the case of specular reflection. An illuminated ideal diffuse reflecting surface will have equal luminance from all directions which lie in the half-space adjacent to the surface (Lambertian reflectance). החזרה מפוזרת