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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..
Lern More About Optical
☛ Wiki Definition of Optical
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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..
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..
Autoptical
::
Autoptical
(a.) Seen with one's own eyes;
belonging
to, or
connected
with,
personal
observation;
as,
autoptic
testimony
or
experience..
Stop
::
Stop (n.) The
diaphragm
used in
optical
instruments
to cut off the
marginal
portions
of a beam of light
passing
through
lenses.
Aperture
::
Aperture
(n.) The
diameter
of the
exposed
part of the
object
glass of a
telescope
or other
optical
instrument;
as, a
telescope
of
four-inch
aperture..
Optically
::
Optically
(adv.)
By
optics
or
sight;
with
reference
to
optics.
Glass
::
Glass (v. t.) An
optical
glass;
a lens; a
spyglass;
-- in the
plural,
spectacles;
as, a pair of
glasses;
he wears
glasses..
Phoneidoscope
::
Phoneidoscope
(n.) An
instrument
for
studying
the
motions
of
sounding
bodies
by
optical
means.
It
consists
of a tube
across
the end of which is
stretched
a film of soap
solution
thin
enough
to give
colored
bands,
the form and
position
of which are
affected
by
sonorous
vibrations..
Stereoscopic
::
Stereoscope
(n.) An
optical
instrument
for
giving
to
pictures
the
appearance
of solid
forms,
as seen in
nature.
It
combines
in one,
through
a
bending
of the rays of
light,
two
pictures,
taken for the
purpose
from
points
of view a
little
way
apart.
It is
furnished
with two
eyeglasses,
and by
refraction
or
reflection
the
pictures
are
superimposed,
so as to
appear
as one to the
observer..
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..
Phantascope
::
Phantascope
(n.) An
optical
instrument
or toy,
resembling
the
phenakistoscope,
and
illustrating
the same
principle;
--
called
also
phantasmascope..
Periscope
::
Periscope
(n.) an
optical
instrument
of
tubular
shape
containing
an
arrangement
of
lenses
and
mirrors
(or
prisms),
allowing
a
person
to
observe
a field of view
otherwise
obstructed,
as
beyond
an
obstructing
object
or (as in
submarines)
above the
surface
of the
water..
Illuminator
::
Illuminator
(v. t.) A
condenser
or
reflector
of light in
optical
apparatus;
also, an
illuminant..
Phantasm
::
Phantasm
(n.) An image
formed
by the mind, and
supposed
to be real or
material;
a
shadowy
or airy
appearance;
sometimes,
an
optical
illusion;
a
phantom;
a
dream..
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..
Scoptical
::
Scoptical
(a.)
Jesting;
jeering;
scoffing.
Asterism
::
Asterism
(n.) An
optical
property
of some
crystals
which
exhibit
a
star-shaped
by
reflected
light,
as star
sapphire,
or by
transmitted
light,
as some
mica..
Ocular
::
Ocular
(n.) The
eyepiece
of an
optical
instrument,
as of a
telescope
or
microscope..
Autoptically
::
Autoptically
(adv.)
By means of
ocular
view, or one's own
observation..
Power
::
Power (n.) The
degree
to which a lens,
mirror,
or any
optical
instrument,
magnifies;
in the
telescope,
and
usually
in the
microscope,
the
number
of times it
multiplies,
or
augments,
the
apparent
diameter
of an
object;
sometimes,
in
microscopes,
the
number
of times it
multiplies
the
apparent
surface..
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