- The
aperture is an
opening in
certain kinds of
mollusc s****: it is the main
opening of the s****,
where the head-foot part of the body of the animal...
- In optics, the
aperture of an
optical system (including a
system consisted of a
single lens) is a hole or an
opening that
primarily limits light propagated...
- Look up
aperture in Wiktionary, the free dictionary. The
aperture of an
optical system is the
opening that
limits the
amount of
light that can p**** through...
- The
median aperture (median
aperture of
fourth ventricle or
foramen of Magendie) is an
opening at the
caudal portion of the roof of the
fourth ventricle...
- In optics, the
numerical aperture (NA) of an
optical system is a
dimensionless number that
characterizes the
range of
angles over
which the
system can...
- 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 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...
- An
aperture grille is one of two
major technologies used to
manufacture color cathode-ray tube (CRT)
televisions and
computer displays; the
other is the...
- The
lateral aperture,
lateral aperture of
fourth ventricle or
foramen of
Luschka (after
anatomist Hubert von Luschka) is an
opening at the
lateral extremity...
- The
angular aperture of a lens is the
angular size of the lens
aperture as seen from the
focal point: a = 2
arctan ( D / 2 f ) = 2
arctan ( D 2 f...
