- 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...
- 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...
-
relative aperture,
because it is the
inverse of the
relative aperture,
defined as the
aperture diameter divided by
focal length. The
relative aperture indicates...
- 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...
- The
lateral aperture of the
fourth ventricle or
foramen of
Luschka (after
anatomist Hubert von Luschka) is an
opening at the
lateral extremity of either...
-
sight inserts, and
adjustable aperture mechanisms.
Front aperture size is a
compromise between a
tight enough aperture to
clearly define the
aiming point...
- The
median aperture (also
known as the
medial aperture and
foramen of Magendie) is an
opening of the
fourth ventricle at the
caudal portion of the roof...
-
opening (
aperture) at its center. The role of the
diaphragm is to stop the p****age of light,
except for the
light p****ing
through the
aperture. Thus it...
- In
electromagnetics and
antenna theory, the
aperture of an
antenna is
defined as "A surface, near or on an antenna, on
which it is
convenient to make ****umptions...
