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aperture 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈapərˌCHər/,
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apertures, plural;
  1. An opening, hole, or gap
    • - the bell ropes passed through apertures in the ceiling
  2. A space through which light passes in an optical or photographic instrument, esp. the variable opening by which light enters a camera

  1. a device that controls amount of light admitted
  2. a natural opening in something
  3. an man-made opening; usually small
  4. 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. ...
  5. As a receiver, antenna aperture can be visualized as the area of a circle constructed broadside to incoming radiation where all radiation passing within the circle is delivered by the antenna to a matched load. ...
  6. 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. ...
  7. In computing, an aperture is a portion of the address space which is persistently associated with a particular peripheral device or a memory unit. Apertures may reach external devices such as ROM or RAM chips, or internal memory on the CPU itself.
  8. Aperture is a quarterly photography magazine and a book publisher based in New York, New York, USA. The magazine is published by Aperture Foundation, a non-profit organization devoted to fine art photography.
  9. 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.
  10. An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall; Something which restricts the diameter of the light path through one plane in an optical system; The diameter of the aperture (in the sense above) which restricts the width of the light ...
  11. (apertured) Having an aperture (or a specified type of aperture)
  12. In television optics, it is the effective diameter of the lens that controls the amount of light reaching the photoconductive or photo emitting image pickup sensor.
  13. The opening in an optical system that establishes the field of view.
  14. the opening or openings in the die tool, of the same cross-sectional area and contour as the product to be extruded.
  15. Small opening. The dials of some watches (in French: montres à guichet) have apertures in which certain indications are provided (e.g. the date, the hour, etc).
  16. The light gathering area of a lens, controlled by the iris.
  17. A relatively large opening on the last-formed chamber of a foraminiferal shell.
  18. Mechanism behind the lens that controls the amount of light entering the camera. The aperture not only influences picture brightness but also regulates depth of focus. Most cameras are equipped with an iris aperture that can be freely adjusted or set according to pre-selected values.
  19. The size of the opening through which light passes in an optical instrument such as a camera or telescope. A higher number represents a smaller opening while a lower number represents a larger opening.
  20. A predetermined shape (round, square, oblong, etc.), size (width, diameter), and type (draw or flash) that is exposed on artwork film by a photoplotter.
  21. Used as a dimension, the area of the projection of the opening of a solar collector onto a plane perpendicular to the direction of sunlight. ...
  22. A variable opening inside a lens that regulates the amount of light reaching the image plane. Also known as an iris. (Camera/Lighting)
  23. A cross sectional area of the antenna which is exposed to the satellite signal.
  24. The opening in an ophthalmic frame into which a lens is inserted. Aperture dimensions (in millimeters) do not include the depth of the bevel groove. That principal meridian which contains only the spherical power component of a spherocylinder lens.
  25. The aperture is the physical lens opening on your camera. It is adjusted to open and close in f-stop increments, allowing more or less light in with a larger or smaller opening. ...