Mahe PS lies with in North Malabar area of Kerala State and on the National High way No.17, Border of the PS are Thalassery PS on North, Chockli PS on South and Edacherry PS on East and Arabian Sea on West. AREA: 3 Sq. KMs.
aperture apÂ·erÂ·ture (Äp'Ér-chÉr) n. An opening, such as a hole, gap, or slit. A usually adjustable opening in an optical instrument, such as a microscope, a camera, or a telescope, that limits the amount of light passing through a lens or onto a mirror. The diameter of such an opening. The diameter of the objective of a telescope or microscope.
Numerical aperture is commonly used in microscopy to describe the acceptance cone of an objective (and hence its light-gathering ability and resolution), and in fiber optics, in which it describes the range of angles within which light that is incident on the fiber will be transmitted along it.