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Nov 29, 2023 · Quick Definition: Aperture. In the realm of photography, aperture refers to the size of the opening in the lens through which light enters the camera. The larger the opening or aperture, the more light that can enter, significantly affecting the photo's exposure and depth of field.
aperture in American English. (ˈæpərtʃər) noun. 1. an opening, as a hole, slit, crack, gap, etc. 2. Also called: aperture stop Optics. an opening, usually circular, that limits the quantity of light that can enter an optical instrument.
APERTURE 의미, 정의, APERTURE의 정의: 1. a small and often narrow opening, especially one that allows light into a camera 2. a small and…. 자세히 알아보기.
Understanding how different aperture settings work. The f-stop number or f-number, is the setting that controls the size of the aperture and therefore how much light can pass through the camera lens. F-numbers are determined by the ratio of the diameter of the aperture to the focal length of a lens. A small aperture has a higher f-stop, whereas ...
An Antenna including an aperture at the ending is known as an Aperture antenna. The best example of this antenna is Waveguide. Here, the aperture may be square, cone, rectangular or circular. Antenna aperture is the area around an antenna where power can be derived from electromagnetic field effects. It is a multiband ortho-rectified antenna.
Feb 23, 2015 · The aperture efficiency of a horn or reflector antenna is the ratio of the effective aperture to the physical aperture. The formula usually looks like: ϵap = Ae Ap ϵ a p = A e A p. The aperture efficiency is a dimensionless number usually reported as a percentage and Ae A e is the effective aperture and Ap A p is the physical aperture.
The numerical aperture (NA) of the fiber is the sine of that maximum angle of an incident ray with respect to the fiber axis. It can be calculated from the refractive index difference between core and cladding, more precisely with the following relation: N A = n c o r e 2 − n c l a d d i n g 2.
