| slovo | definícia |
microscope
(encz) | microscope,mikroskop n: Zdeněk Brož |
microscope
(gcide) | Achromatic \Ach`ro*mat"ic\, a. [Gr. 'achrw`matos colorless; 'a
priv. + chrw^ma, chrw`matos, color: cf. F. achromatique.]
1. (Opt.) Free from color; transmitting light without
decomposing it into its primary colors.
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2. (Biol.) Uncolored; not absorbing color from a fluid; --
said of tissue.
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Achromatic lens (Opt.), a lens composed usually of two
separate lenses, a convex and concave, of substances
having different refractive and dispersive powers, as
crown and flint glass, with the curvatures so adjusted
that the chromatic aberration produced by the one is
corrected by other, and light emerges from the compound
lens undecomposed.
Achromatic prism. See Prism.
Achromatic telescope, or microscope, one in which the
chromatic aberration is corrected, usually by means of a
compound or achromatic object glass, and which gives
images free from extraneous color.
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Microscope
(gcide) | Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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microscope
(wn) | microscope
n 1: magnifier of the image of small objects; "the invention of
the microscope led to the discovery of the cell" |
| | podobné slovo | definícia |
compound microscope
(encz) | compound microscope, n: |
dark-field microscope
(encz) | dark-field microscope, n: |
electron microscope
(encz) | electron microscope,elektronový mikroskop n: sheeryjay |
field-emission microscope
(encz) | field-emission microscope, n: |
light microscope
(encz) | light microscope, n: |
microscope slide
(encz) | microscope slide, n: |
microscope stage
(encz) | microscope stage, n: |
microscopes
(encz) | microscopes,mikroskopy n: pl. Zdeněk Brož |
operating microscope
(encz) | operating microscope, n: |
simple microscope
(encz) | simple microscope, n: |
ultramicroscope
(encz) | ultramicroscope,ultramikroskop n: Zdeněk Brož |
Axis of a microscope
(gcide) | Axis \Ax"is\, n.; pl. Axes. [L. axis axis, axle. See Axle.]
A straight line, real or imaginary, passing through a body,
on which it revolves, or may be supposed to revolve; a line
passing through a body or system around which the parts are
symmetrically arranged.
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2. (Math.) A straight line with respect to which the
different parts of a magnitude are symmetrically arranged;
as, the axis of a cylinder, i. e., the axis of a cone,
that is, the straight line joining the vertex and the
center of the base; the axis of a circle, any straight
line passing through the center.
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3. (Bot.) The stem; the central part, or longitudinal
support, on which organs or parts are arranged; the
central line of any body. --Gray.
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4. (Anat.)
(a) The second vertebra of the neck, or {vertebra
dentata}.
(b) Also used of the body only of the vertebra, which is
prolonged anteriorly within the foramen of the first
vertebra or atlas, so as to form the odontoid process
or peg which serves as a pivot for the atlas and head
to turn upon.
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5. (Crystallog.) One of several imaginary lines, assumed in
describing the position of the planes by which a crystal
is bounded.
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6. (Fine Arts) The primary or secondary central line of any
design.
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Anticlinal axis (Geol.), a line or ridge from which the
strata slope downward on the two opposite sides.
Synclinal axis, a line from which the strata slope upward
in opposite directions, so as to form a valley.
Axis cylinder (Anat.), the neuraxis or essential, central
substance of a nerve fiber; -- called also axis band,
axial fiber, and cylinder axis.
Axis in peritrochio, the wheel and axle, one of the
mechanical powers.
Axis of a curve (Geom.), a straight line which bisects a
system of parallel chords of a curve; called a {principal
axis}, when cutting them at right angles, in which case it
divides the curve into two symmetrical portions, as in the
parabola, which has one such axis, the ellipse, which has
two, or the circle, which has an infinite number. The two
axes of the ellipse are the major axis and the {minor
axis}, and the two axes of the hyperbola are the
transverse axis and the conjugate axis.
Axis of a lens, the straight line passing through its
center and perpendicular to its surfaces.
Axis of a microscope or Axis of a telescope, the straight
line with which coincide the axes of the several lenses
which compose it.
Axes of co["o]rdinates in a plane, two straight lines
intersecting each other, to which points are referred for
the purpose of determining their relative position: they
are either rectangular or oblique.
Axes of co["o]rdinates in space, the three straight lines
in which the co["o]rdinate planes intersect each other.
Axis of a balance, that line about which it turns.
Axis of oscillation, of a pendulum, a right line passing
through the center about which it vibrates, and
perpendicular to the plane of vibration.
Axis of polarization, the central line around which the
prismatic rings or curves are arranged. --Brewster.
Axis of revolution (Descriptive Geom.), a straight line
about which some line or plane is revolved, so that the
several points of the line or plane shall describe circles
with their centers in the fixed line, and their planes
perpendicular to it, the line describing a surface of
revolution, and the plane a solid of revolution.
Axis of symmetry (Geom.), any line in a plane figure which
divides the figure into two such parts that one part, when
folded over along the axis, shall coincide with the other
part.
Axis of the equator, ecliptic, horizon (or other circle
considered with reference to the sphere on which it lies),
the diameter of the sphere which is perpendicular to the
plane of the circle. --Hutton.
Axis of the Ionic capital (Arch.), a line passing
perpendicularly through the middle of the eye of the
volute.
Neutral axis (Mech.), the line of demarcation between the
horizontal elastic forces of tension and compression,
exerted by the fibers in any cross section of a girder.
Optic axis of a crystal, the direction in which a ray of
transmitted light suffers no double refraction. All
crystals, not of the isometric system, are either uniaxial
or biaxial.
Optic axis, Visual axis (Opt.), the straight line passing
through the center of the pupil, and perpendicular to the
surface of the eye.
Radical axis of two circles (Geom.), the straight line
perpendicular to the line joining their centers and such
that the tangents from any point of it to the two circles
shall be equal to each other.
Spiral axis (Arch.), the axis of a twisted column drawn
spirally in order to trace the circumvolutions without.
Axis of abscissas and Axis of ordinates. See Abscissa.
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Compound microscope
(gcide) | Compound \Com"pound\, a. [OE. compouned, p. p. of compounen. See
Compound, v. t.]
Composed of two or more elements, ingredients, parts;
produced by the union of several ingredients, parts, or
things; composite; as, a compound word.
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Compound substances are made up of two or more simple
substances. --I. Watts.
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Compound addition, subtraction, multiplication,
division (Arith.), the addition, subtraction, etc., of
compound numbers.
Compound crystal (Crystallog.), a twin crystal, or one
seeming to be made up of two or more crystals combined
according to regular laws of composition.
Compound engine (Mech.), a form of steam engine in which
the steam that has been used in a high-pressure cylinder
is made to do further service in a larger low-pressure
cylinder, sometimes in several larger cylinders,
successively.
Compound ether. (Chem.) See under Ether.
Compound flower (Bot.), a flower head resembling a single
flower, but really composed of several florets inclosed in
a common calyxlike involucre, as the sunflower or
dandelion.
Compound fraction. (Math.) See Fraction.
Compound fracture. See Fracture.
Compound householder, a householder who compounds or
arranges with his landlord that his rates shall be
included in his rents. [Eng.]
Compound interest. See Interest.
Compound larceny. (Law) See Larceny.
Compound leaf (Bot.), a leaf having two or more separate
blades or leaflets on a common leafstalk.
Compound microscope. See Microscope.
Compound motion. See Motion.
Compound number (Math.), one constructed according to a
varying scale of denomination; as, 3 cwt., 1 qr., 5 lb.;
-- called also denominate number.
Compound pier (Arch.), a clustered column.
Compound quantity (Alg.), a quantity composed of two or
more simple quantities or terms, connected by the sign +
(plus) or - (minus). Thus, a + b - c, and bb - b, are
compound quantities.
Compound radical. (Chem.) See Radical.
Compound ratio (Math.), the product of two or more ratios;
thus ab:cd is a ratio compounded of the simple ratios a:c
and b:d.
Compound rest (Mech.), the tool carriage of an engine
lathe.
Compound screw (Mech.), a screw having on the same axis two
or more screws with different pitch (a differential
screw), or running in different directions (a right and
left screw).
Compound time (Mus.), that in which two or more simple
measures are combined in one; as, 6-8 time is the joining
of two measures of 3-8 time.
Compound word, a word composed of two or more words;
specifically, two or more words joined together by a
hyphen.
[1913 Webster]Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
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Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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Lucernal microscope
(gcide) | Lucernal \Lu*cer"nal\, a. [L. lucerna a lamp.]
Of or pertaining to a lamp.
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Lucernal microscope, a form of the microscope in which the
object is illuminated by means of a lamp, and its image is
thrown upon a plate of ground glass connected with the
instrument, or on a screen independent of it.
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Micrometer microscope
(gcide) | Micrometer \Mi*crom"e*ter\, n. [Micro- + -meter: cf. F.
microm[`e]tre.]
An instrument, used with a telescope or microscope, for
measuring minute distances, or the apparent diameters of
objects which subtend minute angles. The measurement given
directly is that of the image of the object formed at the
focus of the object glass.
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Circular micrometer, or Ring micrometer, a metallic ring
fixed in the focus of the object glass of a telescope, and
used to determine differences of right ascension and
declination between stars by observations of the times at
which the stars cross the inner or outer periphery of the
ring.
Double image micrometer, a micrometer in which two images
of an object are formed in the field, usually by the two
halves of a bisected lens which are movable along their
line of section by a screw, and distances are determined
by the number of screw revolutions necessary to bring the
points to be measured into optical coincidence. When the
two images are formed by a bisected object glass, it is
called a divided-object-glass micrometer, and when the
instrument is large and equatorially mounted, it is known
as a heliometer.
Double refraction micrometer, a species of double image
micrometer, in which the two images are formed by the
double refraction of rock crystal.
Filar micrometer, or Bifilar micrometer. See under
Bifilar.
Micrometer caliper or Micrometer gauge (Mech.), a caliper
or gauge with a micrometer screw, for measuring dimensions
with great accuracy.
Micrometer head, the head of a micrometer screw.
Micrometer microscope, a compound microscope combined with
a filar micrometer, used chiefly for reading and
subdividing the divisions of large astronomical and
geodetical instruments.
Micrometer screw, a screw with a graduated head used in
some forms of micrometers; turning the head one full
revolution advances the position of the tip of the screw
only by a little.
Position micrometer. See under Position.
Scale micrometer, or Linear micrometer, a minute and very
delicately graduated scale of equal parts used in the
field of a telescope or microscope, for measuring
distances by direct comparison.
[1913 Webster] Micrometric |
Microscope
(gcide) | Achromatic \Ach`ro*mat"ic\, a. [Gr. 'achrw`matos colorless; 'a
priv. + chrw^ma, chrw`matos, color: cf. F. achromatique.]
1. (Opt.) Free from color; transmitting light without
decomposing it into its primary colors.
[1913 Webster]
2. (Biol.) Uncolored; not absorbing color from a fluid; --
said of tissue.
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Achromatic lens (Opt.), a lens composed usually of two
separate lenses, a convex and concave, of substances
having different refractive and dispersive powers, as
crown and flint glass, with the curvatures so adjusted
that the chromatic aberration produced by the one is
corrected by other, and light emerges from the compound
lens undecomposed.
Achromatic prism. See Prism.
Achromatic telescope, or microscope, one in which the
chromatic aberration is corrected, usually by means of a
compound or achromatic object glass, and which gives
images free from extraneous color.
[1913 Webster]Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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Microscope stand
(gcide) | Stand \Stand\ (st[a^]nd), n. [AS. stand. See Stand, v. i.]
1. The act of standing.
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I took my stand upon an eminence . . . to look into
their several ladings. --Spectator.
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2. A halt or stop for the purpose of defense, resistance, or
opposition; as, to come to, or to make, a stand.
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Vice is at stand, and at the highest flow. --Dryden.
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3. A place or post where one stands; a place where one may
stand while observing or waiting for something.
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I have found you out a stand most fit,
Where you may have such vantage on the duke,
He shall not pass you. --Shak.
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4. A station in a city or town where carriages or wagons
stand for hire; as, a cab stand. --Dickens.
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5. A raised platform or station where a race or other outdoor
spectacle may be viewed; as, the judge's or the grand
stand at a race course.
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6. A small table; also, something on or in which anything may
be laid, hung, or placed upright; as, a hatstand; an
umbrella stand; a music stand.
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7. The place where a witness stands to testify in court.
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8. The situation of a shop, store, hotel, etc.; as, a good,
bad, or convenient stand for business. [U. S.]
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9. Rank; post; station; standing.
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Father, since your fortune did attain
So high a stand, I mean not to descend. --Daniel.
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10. A state of perplexity or embarrassment; as, to be at a
stand what to do. --L'Estrange.
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11. A young tree, usually reserved when other trees are cut;
also, a tree growing or standing upon its own root, in
distinction from one produced from a scion set in a
stock, either of the same or another kind of tree.
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12. (Com.) A weight of from two hundred and fifty to three
hundred pounds, -- used in weighing pitch.
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Microscope stand, the instrument, excepting the eyepiece,
objective, and other removable optical parts.
Stand of ammunition, the projectile, cartridge, and sabot
connected together.
Stand of arms. (Mil.) See under Arms.
Stand of colors (Mil.), a single color, or flag. --Wilhelm
(Mil. Dict.)
To be at a stand, to be stationary or motionless; to be at
a standstill; hence, to be perplexed; to be embarrassed.
To make a stand, to halt for the purpose of offering
resistance to a pursuing enemy.
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Syn: Stop; halt; rest; interruption; obstruction; perplexity;
difficulty; embarrassment; hesitation.
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Oxyhydrogen microscope
(gcide) | Oxyhydrogen \Ox`y*hy"dro*gen\, a. [Oxy
(a) + hydrogen.] (Chem.) Of, pertaining to, or consisting of,
a mixture of oxygen and hydrogen at over 5000[deg] F.
[Webster 1913 Suppl.]
Oxyhydrogen blowpipe. (Chem.) See Blowpipe.
Oxyhydrogen microscope, a form of microscope arranged so as
to use the light produced by burning lime or limestone
under a current of oxyhydrogen gas.
[1913 Webster]Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
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Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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Simple microscope
(gcide) | Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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Single microscope
(gcide) | Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
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Solar microscope
(gcide) | Solar \So"lar\, a. [L. solaris, fr. sol the sun; akin to As.
s[=o]l, Icel. s[=o]l, Goth. sauil, Lith. saule, W. haul,.
sul, Skr. svar, perhaps to E. sun:F. solaire. Cf. Parasol.
Sun.]
1. Of or pertaining to the sun; proceeding from the sun; as,
the solar system; solar light; solar rays; solar
influence. See Solar system, below.
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2. (Astrol.) Born under the predominant influence of the sun.
[Obs.]
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And proud beside, as solar people are. --Dryden.
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3. Measured by the progress or revolution of the sun in the
ecliptic; as, the solar year.
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4. Produced by the action of the sun, or peculiarly affected
by its influence.
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They denominate some herbs solar, and some lunar.
--Bacon.
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Solar cycle. See under Cycle.
Solar day. See Day, 2.
Solar engine, an engine in which the energy of solar heat
is used to produce motion, as in evaporating water for a
steam engine, or expanding air for an air engine.
Solar flowers (Bot.), flowers which open and shut daily at
certain hours.
Solar lamp, an argand lamp.
Solar microscope, a microscope consisting essentially,
first, of a mirror for reflecting a beam of sunlight
through the tube, which sometimes is fixed in a window
shutter; secondly, of a condenser, or large lens, for
converging the beam upon the object; and, thirdly, of a
small lens, or magnifier, for throwing an enlarged image
of the object at its focus upon a screen in a dark room or
in a darkened box.
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Solar month. See under Month.
Solar oil, a paraffin oil used an illuminant and lubricant.
Solar phosphori (Physics), certain substances, as the
diamond, siulphide of barium (Bolognese or Bologna
phosphorus), calcium sulphide, etc., which become
phosphorescent, and shine in the dark, after exposure to
sunlight or other intense light.
Solar plexus (Anat.), a nervous plexus situated in the
dorsal and anterior part of the abdomen, consisting of
several sympathetic ganglia with connecting and radiating
nerve fibers; -- so called in allusion to the radiating
nerve fibers.
Solar spots. See Sun spots, under Sun.
Solar system (Astron.), the sun, with the group of
celestial bodies which, held by its attraction, revolve
round it. The system comprises the major planets, with
their satellites; the minor planets, or asteroids, and the
comets; also, the meteorids, the matter that furnishes the
zodiacal light, and the rings of Saturn. The satellites
that revolve about the major planets are twenty-two in
number, of which the Earth has one (see Moon.), Mars
two, Jupiter five, Saturn nine, Uranus four, and Neptune
one. The asteroids, between Mars and Jupiter, thus far
discovered (1900), number about five hundred, the first
four of which were found near the beginning of the
century, and are called Ceres, Pallas, Juno, and Vesta.
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Note: The principal elements of the major planets, and of the
comets seen at more than one perihelion passage, are
exhibited in the following tables:
[1913 Webster] I. -- Major Planets. Symbol.Name.Mean
distance -- that of the Earth being unity.Period in
days.Eccentricity.Inclination of orbit.Diameter in
miles ?????????????????????
[1913 Webster] II. -- Periodic Comets. Name.Greatest
distance from sun.Least distance from sun.Inclination
of orbit.Perihelion passage. [deg] [min] 54
Encke's3.314.100.34212 541885.2 ?????????????????????
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Solar telegraph, telegraph for signaling by flashes of
reflected sunlight.
Solar time. See Apparent time, under Time.
[1913 Webster]Microscope \Mi"cro*scope\, n. [Micro- + -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
[1913 Webster]
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple microscope, or Single microscope, a single convex
lens used to magnify objects placed in its focus.
[1913 Webster] |
binocular microscope
(wn) | binocular microscope
n 1: a light microscope adapted to the use of both eyes |
compound microscope
(wn) | compound microscope
n 1: light microscope that has two converging lens systems: the
objective and the eyepiece |
dark-field microscope
(wn) | dark-field microscope
n 1: light microscope that uses scattered light to show
particles too small to see with ordinary microscopes [syn:
ultramicroscope, dark-field microscope] |
electron microscope
(wn) | electron microscope
n 1: a microscope that is similar in purpose to a light
microscope but achieves much greater resolving power by
using a parallel beam of electrons to illuminate the object
instead of a beam of light |
field-emission microscope
(wn) | field-emission microscope
n 1: electron microscope used to observe the surface structure
of a solid |
light microscope
(wn) | light microscope
n 1: microscope consisting of an optical instrument that
magnifies the image of an object |
microscope slide
(wn) | microscope slide
n 1: a small flat rectangular piece of glass on which specimens
can be mounted for microscopic study [syn: slide,
microscope slide] |
microscope stage
(wn) | microscope stage
n 1: a small platform on a microscope where the specimen is
mounted for examination [syn: stage, microscope stage] |
operating microscope
(wn) | operating microscope
n 1: binocular microscope used in surgery to provide a clear
view of small and inaccessible parts of the body (as in
microsurgery) |
simple microscope
(wn) | simple microscope
n 1: light microscope consisting of a single convex lens that is
used to produce an enlarged image; "the magnifying glass
was invented by Roger Bacon in 1250" [syn: hand glass,
simple microscope, magnifying glass] |
ultramicroscope
(wn) | ultramicroscope
n 1: light microscope that uses scattered light to show
particles too small to see with ordinary microscopes [syn:
ultramicroscope, dark-field microscope] |
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