| slovo | definícia |
optics
(mass) | optics
- optika |
optics
(encz) | optics,optika n: joe@hw.cz |
Optics
(gcide) | Optics \Op"tics\, n. [Cf. F. optique, L. optice, Gr. ? (sc. ?).
See Optic.]
That branch of physical science which treats of the nature
and properties of light, the laws of its modification by
opaque and transparent bodies, and the phenomena of vision.
[1913 Webster] |
optics
(wn) | optics
n 1: the branch of physics that studies the physical properties
of light
2: optical properties; "the optics of a telescope" |
| | podobné slovo | definícia |
electron optics
(encz) | electron optics, n: |
fiber optics
(encz) | fiber optics,optická vlákna Hynek Hanke |
fiberoptics
(encz) | fiberoptics, n: |
fibre optics
(encz) | fibre optics, n: |
fibreoptics
(encz) | fibreoptics, n: |
orthoptics
(encz) | orthoptics, n: |
non-linear optics
(czen) | Non-Linear Optics,NLO[zkr.] [voj.] Zdeněk Brož a automatický překlad |
adaptive optics
(gcide) | adaptive optics \adaptive optics\ n. (Astron.)
an optical system used in some telescopes since the 1980's
which rapidly changes the shape of the primary reflecting
mirror to adjust for distortions of light which are caused by
atmospheric turbulence. By reducing the distortions caused by
the atmosphere, telescopes fitted with such optics can
achieve a higher resolving power than normal telescopes with
static mirrors.
[PJC] |
Fiber optics
(gcide) | Fiber optics \Fi"ber op`tics\,, n.
that branch of optics which studies the transmission of light
through thin transparent fibers.
Note: Light transmission through optical fibers has become an
important means of data and telephone signal
transmission, in some areas superseding the carrying of
vioce and data signals through electrical pulses over
copper wire. It is also used for directly carrying
images from otherwise inaccessible locations, as from
inside the body, for medical procedures. Light
transmission via fiber optics for data transmission
uses an optical fiber made of specially purified
glass with low light absorption characteristics.
[PJC] |
Heteroptics
(gcide) | Heteroptics \Het`er*op"tics\, n. [Hetero- + optics.]
False optics. --Spectator.
[1913 Webster] |
Optics
(gcide) | Optics \Op"tics\, n. [Cf. F. optique, L. optice, Gr. ? (sc. ?).
See Optic.]
That branch of physical science which treats of the nature
and properties of light, the laws of its modification by
opaque and transparent bodies, and the phenomena of vision.
[1913 Webster] |
Scioptics
(gcide) | Scioptics \Sci*op"tics\, n.
The art or process of exhibiting luminous images, especially
those of external objects, in a darkened room, by
arrangements of lenses or mirrors.
[1913 Webster] |
electron optics
(wn) | electron optics
n 1: the branch of electronics that deals with beams of
electrons and their focusing and deflection by magnetic
fields |
fiber optics
(wn) | fiber optics
n 1: the transmission of light signals via glass fibers [syn:
fiber optics, fiberoptics, fibre optics,
fibreoptics] |
fiberoptics
(wn) | fiberoptics
n 1: the transmission of light signals via glass fibers [syn:
fiber optics, fiberoptics, fibre optics,
fibreoptics] |
fibre optics
(wn) | fibre optics
n 1: the transmission of light signals via glass fibers [syn:
fiber optics, fiberoptics, fibre optics,
fibreoptics] |
fibreoptics
(wn) | fibreoptics
n 1: the transmission of light signals via glass fibers [syn:
fiber optics, fiberoptics, fibre optics,
fibreoptics] |
orthoptics
(wn) | orthoptics
n 1: treatment of defects of binocular vision (such as
strabismus and amblyopia) by nonsurgical measures
(especially by exercises to strengthen the eye muscles) |
synoptics
(wn) | Synoptics
n 1: the first three Gospels which describe events in Christ's
life from a similar point of view [syn: Synoptic Gospels,
Synoptics] |
fiber optics
(foldoc) | fiber optics
US spelling of "fibre optics". See {optical
fibre}.
(1997-03-31)
|
fibre optics
(foldoc) | optical fibre
fibre optics
light pipe
optical fiber
(fibre optics, FO, US "fiber", light pipe) A
plastic or glass (silicon dioxide) fibre no thicker than a
human hair used to transmit information using infra-red or
even visible light as the carrier (usually a laser). The
light beam is an electromagnetic signal with a frequency in
the range of 10^14 to 10^15 Hertz.
Optical fibre is less susceptible to external noise than other
transmission media, and is cheaper to make than copper wire,
but it is much more difficult to connect. Optical fibres are
difficult to tamper with (to monitor or inject data in the
middle of a connection), making them appropriate for secure
communications. The light beams do not escape from the medium
because the material used provides total internal reflection.
AT&T Bell Laboratories in the United States managed to
send information at a rate of 420 megabits per second, over
161.5 km through an optical fibre cable. In Japan, 445.8
megabits per second was achieved over a shorter distance. At
this rate, the entire text of the Encyclopedia Britannica
could be transmitted in one second. Currently, AT&T is
working on a world network to support high volume data
transmission, international computer networking, {electronic
mail} and voice communications (a single fibre can transmit
200 million telephone conversations simultaneously).
See also FDDI, Optical Carrier n, SONET.
(1997-05-26)
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