Aperture (disambiguation)
Encyclopedia
The aperture
of an optical system is the opening that limits the amount of light that can pass through.
Aperture may also refer to:
Aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane. The aperture determines how collimated the admitted rays are,...
of an optical system is the opening that limits the amount of light that can pass through.
Aperture may also refer to:
Science and technology
- Aperture (antenna), a physical parameter of an antenna
- Aperture (mollusc)Aperture (mollusc)The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....
, the main opening in the shell of a gastropod or scaphopod (mollusc) - Aperture (botany)Aperture (botany)Apertures are very small spots on the walls of a pollen, where the wall is thinner and/or softer. For germination it is necessary that the pollen tube can reach out from the inner of the pollen and transport the chromosomes to the egg deep down in the pistil...
, a weaker spot in the wall of a pollen grain - Numerical apertureNumerical apertureIn optics, the numerical aperture of an optical system is a dimensionless number that characterizes the range of angles over which the system can accept or emit light. By incorporating index of refraction in its definition, NA has the property that it is constant for a beam as it goes from one...
is a parameter used to describe optical systems
Computers
- Aperture (computer memory)Aperture (computer memory)In computing, an aperture is a portion of the address space which is persistently associated with a particular peripheral device or a memory unit...
, a region of the physical address space that opens access to a particular device or memory unit - Aperture (software), an image organization and editing program for photographers, sold by Apple Inc.
Other
- Aperture (typography), an enclosed loop in a typographical symbol - such as the lower part of the letter 'a'
- Aperture (magazine)Aperture (magazine)Aperture is a quarterly photography magazine and a book publisher based in New York, New York. The magazine is published by Aperture Foundation, a non-profit organization devoted to fine art photography.-Magazine:...
, a long-running art photography magazine