a photoelectric device for intensifying faint astronomical images

(advertising) A consumer's perception of a brand.

(computing) The process of creating a ghost image of all the contents of a hard drive as a backup that may be stored and later retrieved if needed.

(medicine) The use of medical diagnostic devices in the office of a treating physician, not relying on an outside service.

An image that is reversed from left to right, as it would appear if seen in a mirror; a reflection.

(photography) Any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system.

(computing) A copy of all the contents of a hard drive, used as a backup.

The subjective inner picture of one's outward physical appearance.

(colloquial) The exact likeness (of someone).

That part of an optical system where real or virtual images are formed