Definition of Apertures. Meaning of Apertures. Synonyms of Apertures

Here you will find one or more explanations in English for the word Apertures. Also in the bottom left of the page several parts of wikipedia pages related to the word Apertures and, of course, Apertures synonyms and on the right images related to the word Apertures.

Definition of Apertures

Aperture
Aperture Ap"er*ture (?; 135), n. [L. apertura, fr. aperire. See Aperient.] 1. The act of opening. [Obs.] 2. An opening; an open space; a gap, cleft, or chasm; a passage perforated; a hole; as, an aperture in a wall. An aperture between the mountains. --Gilpin. The back aperture of the nostrils. --Owen. 3. (Opt.) The diameter of the exposed part of the object glass of a telescope or other optical instrument; as, a telescope of four-inch aperture. Note: The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100[deg] aperture.

Meaning of Apertures from wikipedia

- that are not the aperture stop of an optical system are also called apertures. Contexts need to clarify these terms. The word aperture is also used in...
- the amount of light that can p**** through. Aperture may also refer to: In anatomy, a number of apertures in the human body: Apertura nasalis posterior...
- openings of the fourth ventricle are the lateral apertures - one on either side. The median aperture varies in size but accounts for most of the outflow...
- The lateral aperture, lateral aperture of fourth ventricle or foramen of Luschka (after anatomist Hubert von Luschka) is an opening at the lateral extremity...
- numerical apertures collect more light and will generally provide a brighter image, but will provide shallower depth of field. Numerical aperture is used...
- Coded apertures or coded-aperture masks are grids, gratings, or other patterns of materials opaque to various wavelengths of electromagnetic radiation...
- Eudicots, usually have three apertures that run from the proximal side of the pollen grain to the distal side: this apertures are named colpi, and the pollen...
- Aperture priority, often abbreviated A or Av (for aperture value) on a camera mode dial, is a mode on some cameras that allows the user to set a specific...
- The piriform aperture, pyriform aperture, or anterior nasal aperture is a pear-shaped opening in the human skull. Its long axis is vertical, and narrow...
- Aperture is a discontinued professional image organizer and editor developed by Apple between 2005 and 2015 for the Mac, as a professional alternative...