| slovo | definícia |
A straight line
(gcide) | Straight \Straight\, a. [Compar. Straighter; superl.
Straightest.] [OE. strei?t, properly p. p. of strecchen to
stretch, AS. streht, p. p. of streccan to stretch, to extend.
See Stretch.]
1. Right, in a mathematical sense; passing from one point to
another by the nearest course; direct; not deviating or
crooked; as, a straight line or course; a straight piece
of timber.
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And the crooked shall be made straight. --Isa. xl.
4.
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There are many several sorts of crooked lines, but
there is only one which is straight. --Dryden.
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2. (Bot.) Approximately straight; not much curved; as,
straight ribs are such as pass from the base of a leaf to
the apex, with a small curve.
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3. (Card Playing) Composed of cards which constitute a
regular sequence, as the ace, king, queen, jack, and
ten-spot; as, a straight hand; a straight flush.
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4. Conforming to justice and rectitude; not deviating from
truth or fairness; upright; as, straight dealing.
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5. Unmixed; undiluted; as, to take liquor straight. [Slang]
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6. Making no exceptions or deviations in one's support of the
organization and candidates of a political party; as, a
straight Republican; a straight Democrat; also, containing
the names of all the regularly nominated candidates of a
party and no others; as, a straight ballot. [Political
Cant, U.S.]
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Straight arch (Arch.), a form of arch in which the intrados
is straight, but with its joints drawn radially, as in a
common arch.
A straight face, one giving no evidence of merriment or
other emotion.
A straight line. "That which lies evenly between its
extreme points." --Euclid. "The shortest line between two
points." --Chauvenet. "A line which has the same direction
through its whole length." --Newcomb.
Straight-way valve, a valve which, when opened widely,
affords a straight passageway, as for water.
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| | podobné slovo | definícia |
walk a straight line
(encz) | walk a straight line, |
Projection of a straight line of a plane
(gcide) | 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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