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Что (кто) такое octant$54535$ - определение
WIKIMEDIA DISAMBIGUATION PAGE
Octant (disambiguation)
Octant
·noun The eighth part of a circle; an arc of 45 degrees.
II. Octant ·noun One of the eight parts into which a space is divided by three coordinate planes.
III. Octant ·noun An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O°, but being itself the eighth part of a circle. ·cf. Sextant.
IV. Octant ·noun The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.
octant
['?kt(?)nt]
¦ noun
1. an arc of a circle equal to one eighth of its circumference, or the area enclosed by such an arc with two radii of the circle.
2. each of eight parts into which a space or solid body is divided by three planes which intersect (especially at right angles) at a single point.
3. an obsolete instrument in the form of a graduated eighth of a circle, used in astronomy and navigation.
Origin
C17: from L. octans, octant- 'half-quadrant', from octo 'eight'.
Octant (solid geometry)
ONE OF THE EIGHT DIVISIONS OF A EUCLIDEAN THREE-DIMENSIONAL COORDINATE SYSTEM DEFINED BY THE SIGNS OF THE COORDINATES;SIMILAR TO THE TWO-DIMENSIONAL QUADRANT AND THE ONE-DIMENSIONAL RAY; THE GENERALIZATION OF AN OCTANT IS CALLED ORTHANT
Octant (geometry); Octant (three-dimensional)
An octant in solid geometry is one of the eight divisions of a Euclidean three-dimensional coordinate system defined by the signs of the coordinates. It is similar to the two-dimensional quadrant and the one-dimensional ray.
Википедия
Octant
Octant may refer to:
- Octant (plane geometry), one eighth of a full circle
- Octant (solid geometry), one of the eight divisions of 3-dimensional space by coordinate planes
- Octant (circle), a circular segment
- Octant (instrument) for celestial navigation
- Octans, a constellation also called The Octant
- Octant (band), from Seattle, Washington
