| slovo | definícia |
gnomon
(encz) | gnomon,gnomón n: jk |
gnomon
(encz) | gnomon,sloupek u slunečních hodin n: Petr Prášek |
Gnomon
(gcide) | Gnomon \Gno"mon\, n. [L. gnomon, Gr. ? one that knows, the index
of a sundial. See Gnome.]
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1. (Dialing) The style or pin, which by its shadow, shows the
hour of the day. It is usually set parallel to the earth's
axis.
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2. (Astron.) A style or column erected perpendicularly to the
horizon, formerly used in astronomocal observations. Its
principal use was to find the altitude of the sun by
measuring the length of its shadow.
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3. (Geom.) The space included between the boundary lines of
two similar parallelograms, the one within the other, with
an angle in common; as, the gnomon bcdefg of the
parallelograms ac and af. The parallelogram bf is the
complement of the parallelogram df.
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4. The index of the hour circle of a globe. Gnomonic |
gnomon
(wn) | gnomon
n 1: indicator provided by the stationary arm whose shadow
indicates the time on the sundial |
| | podobné slovo | definícia |
gnomon
(encz) | gnomon,gnomón n: jkgnomon,sloupek u slunečních hodin n: Petr Prášek |
gnomonic
(encz) | gnomonic,gnómický adj: Zdeněk Brož |
gnomonic projection
(encz) | gnomonic projection,gnómonická projekce n: [zem.] Ivan Masár |
Gnomonic
(gcide) | Gnomonic \Gno*mon"ic\, Gnomonical \Gno*mon"ic*al\, a. [L.
gnomonicus, Gr. ?: cf. F. gnomonique. See Gnomon.]
Of or pertaining to the gnomon, or the art of dialing.
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Gnomonic projection, a projection of the circles of the
sphere, in which the point of sight is taken at the center
of the sphere, and the principal plane is tangent to the
surface of the sphere. "The gnomonic projection derives
its name from the connection between the methods of
describing it and those for the construction of a gnomon
or dial." --Cyc. of Arts & Sciences.
[1913 Webster]Projection \Pro*jec"tion\, n. [L. projectio: cf. F. projection.]
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1. The act of throwing or shooting forward.
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2. A jutting out; also, a part jutting out, as of a building;
an extension beyond something else.
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3. The act of scheming or planning; also, that which is
planned; contrivance; design; plan. --Davenant.
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4. (Persp.) The representation of something; delineation;
plan; especially, the representation of any object on a
perspective plane, or such a delineation as would result
were the chief points of the object thrown forward upon
the plane, each in the direction of a line drawn through
it from a given point of sight, or central point; as, the
projection of a sphere. The several kinds of projection
differ according to the assumed point of sight and plane
of projection in each.
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5. (Geog.) Any method of representing the surface of the
earth upon a plane.
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Conical projection, a mode of representing the sphere, the
spherical surface being projected upon the surface of a
cone tangent to the sphere, the point of sight being at
the center of the sphere.
Cylindric projection, a mode of representing the sphere,
the spherical surface being projected upon the surface of
a cylinder touching the sphere, the point of sight being
at the center of the sphere.
Globular, Gnomonic, Orthographic, projection,etc. See
under Globular, Gnomonic, etc.
Mercator's projection, a mode of representing the sphere in
which the meridians are drawn parallel to each other, and
the parallels of latitude are straight lines whose
distance from each other increases with their distance
from the equator, so that at all places the degrees of
latitude and longitude have to each other the same ratio
as on the sphere itself.
Oblique projection, a projection made by parallel lines
drawn from every point of a figure and meeting the plane
of projection obliquely.
Polar projection, a projection of the sphere in which the
point of sight is at the center, and the plane of
projection passes through one of the polar circles.
Powder of projection (Alchemy.), a certain powder cast into
a crucible or other vessel containing prepared metal or
other matter which is to be thereby transmuted into gold.
Projection of a point on a plane (Descriptive Geom.), the
foot of a perpendicular to the plane drawn through the
point.
Projection of a straight line of a plane, the straight line
of the plane connecting the feet of the perpendiculars let
fall from the extremities of the given line.
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Syn: See Protuberance.
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Gnomonic projection
(gcide) | Gnomonic \Gno*mon"ic\, Gnomonical \Gno*mon"ic*al\, a. [L.
gnomonicus, Gr. ?: cf. F. gnomonique. See Gnomon.]
Of or pertaining to the gnomon, or the art of dialing.
[1913 Webster]
Gnomonic projection, a projection of the circles of the
sphere, in which the point of sight is taken at the center
of the sphere, and the principal plane is tangent to the
surface of the sphere. "The gnomonic projection derives
its name from the connection between the methods of
describing it and those for the construction of a gnomon
or dial." --Cyc. of Arts & Sciences.
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Gnomonical
(gcide) | Gnomonic \Gno*mon"ic\, Gnomonical \Gno*mon"ic*al\, a. [L.
gnomonicus, Gr. ?: cf. F. gnomonique. See Gnomon.]
Of or pertaining to the gnomon, or the art of dialing.
[1913 Webster]
Gnomonic projection, a projection of the circles of the
sphere, in which the point of sight is taken at the center
of the sphere, and the principal plane is tangent to the
surface of the sphere. "The gnomonic projection derives
its name from the connection between the methods of
describing it and those for the construction of a gnomon
or dial." --Cyc. of Arts & Sciences.
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Gnomonically
(gcide) | Gnomonically \Gno*mon"ic*al*ly\, adv.
According to the principles of the gnomonic projection.
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Gnomonics
(gcide) | Gnomonics \Gno*mon"ics\, n. [See Gnomonic.]
The art or science of dialing, or of constructing dials to
show the hour of the day by the shadow of a gnomon.
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Gnomonist
(gcide) | Gnomonist \Gno"mon*ist\, n.
One skilled in gnomonics. --Boyle.
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Gnomonology
(gcide) | Gnomonology \Gno`mon*ol"o*gy\, n. [Gnomon + -logy. Cf.
Gnomonology.]
A treatise on gnomonics.
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Pathognomonic
(gcide) | Pathognomonic \Pa*thog`no*mon"ic\, a. [Gr. ? skilled in judging
of diseases; pa`qos a disease + ? skilled: cf. F.
pathognomonique. See Gnomic.] (Med.)
Specially or decisively characteristic of a disease;
indicating with certainty a disease; as, a pathognomonic
symptom.
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The true pathognomonic sign of love jealousy.
--Arbuthnot.
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gnomon
(wn) | gnomon
n 1: indicator provided by the stationary arm whose shadow
indicates the time on the sundial |
|