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Definition of optical
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of optical is as below...
Optical
(a.)
Relating
to the
science
of
optics;
as,
optical
works..
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Erector
::
Erector
(n.) An
attachment
to a
microscope,
telescope,
or other
optical
instrument,
for
making
the image erect
instead
of
inverted..
Anorthoscope
::
Anorthoscope
(n.) An
optical
toy for
producing
amusing
figures
or
pictures
by means of two
revolving
disks,
on one of which
distorted
figures
are
painted..
Stop
::
Stop (n.) The
diaphragm
used in
optical
instruments
to cut off the
marginal
portions
of a beam of light
passing
through
lenses.
Autopsical
::
Autopsical
(a.)
Pertaining
to
autopsy;
autoptical.
Catoptron
::
Catoptron
(n.) A
reflecting
optical
glass or
instrument;
a
mirror.
Staurotide
::
Stauroscope
(n.) An
optical
instrument
used in
determining
the
position
of the
planes
of
light-vibration
in
sections
of
crystals.
Phantasmagoria
::
Phantasmagoria
(n.) An
optical
effect
produced
by a magic
lantern.
The
figures
are
painted
in
transparent
colors,
and all the rest of the glass is
opaque
black.
The
screen
is
between
the
spectators
and the
instrument,
and the
figures
are often made to
appear
as in
motion,
or to merge into one
another..
Scoptical
::
Scoptical
(a.)
Jesting;
jeering;
scoffing.
Spectacle
::
Spectacle
(n.) An
optical
instrument
consisting
of two
lenses
set in a light
frame,
and worn to
assist
sight,
to
obviate
some
defect
in the
organs
of
vision,
or to
shield
the eyes from
bright
light..
Synoptic
::
Synoptical
(a.)
Affording
a
general
view of the
whole,
or of the
principal
parts of a
thing;
as, a
synoptic
table;
a
synoptical
statement
of an
argument..
Perspective
::
Perspective
(n.) Of or
pertaining
to the
science
of
vision;
optical.
Optically
::
Optically
(adv.)
By
optics
or
sight;
with
reference
to
optics.
Autoptically
::
Autoptically
(adv.)
By means of
ocular
view, or one's own
observation..
Inactive
::
Inactive
(a.) Not
active;
inert;
esp., not
exhibiting
any
action
or
activity
on
polarized
light;
optically
neutral;
-- said of
isomeric
forms of
certain
substances,
in
distinction
from other forms which are
optically
active;
as,
racemic
acid is an
inactive
tartaric
acid..
Illuminator
::
Illuminator
(v. t.) A
condenser
or
reflector
of light in
optical
apparatus;
also, an
illuminant..
Thaumatrope
::
Thaumatrope
(n.) An
optical
instrument
or toy for
showing
the
presistence
of an
impression
upon the eyes after the
luminous
object
is
withdrawn.
Sextant
::
Sextant
(n.) An
instrument
for
measuring
angular
distances
between
objects,
-- used esp. at sea, for
ascertaining
the
latitude
and
longitude.
It is
constructed
on the same
optical
principle
as
Hadley's
quadrant,
but
usually
of
metal,
with a nicer
graduation,
telescopic
sight,
and its arc the
sixth,
and
sometimes
the
third,
part of a
circle.
See
Quadrant..
Graphoscope
::
Graphoscope
(n.) An
optical
instrument
for
magnifying
engravings,
photographs,
etc.,
usually
having
one large lens and two
smaller
ones..
Phantascope
::
Phantascope
(n.) An
optical
instrument
or toy,
resembling
the
phenakistoscope,
and
illustrating
the same
principle;
--
called
also
phantasmascope..
Flint Glass
::
Flint glass () A soft,
heavy,
brilliant
glass,
consisting
essentially
of a
silicate
of lead and
potassium.
It is used for
tableware,
and for
optical
instruments,
as
prisms,
its
density
giving
a high
degree
of
dispersive
power;
-- so
called,
because
formerly
the
silica
was
obtained
from
pulverized
flints.
Called
also
crystal
glass.
Cf.
Glass..
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