What's the "een" in Halloween?
magnification mag·ni·fi·ca·tion (māg'nə-fĭ-kā'shən)
The act of magnifying or the state of being magnified.
Something that has been magnified; an enlarged representation, image, or model.
The ratio of the size of an image to the size of an object.
in optics, the size of an image relative to the size of the object creating it. Linear (sometimes called lateral or transverse) magnification refers to the ratio of image length to object length measured in planes that are perpendicular to the optical axis. A negative value of linear magnification denotes an inverted image. Longitudinal magnification denotes the factor by which an image increases in size, as measured along the optical axis. Angular magnification is equal to the ratio of the tangents of the angles subtended by an object and its image when measured from a given point in the instrument, as with magnifiers and binoculars.