|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
|
quadrant
quadrant 1 In analytic geometry, one of the four regions of the plane determined by two lines, the x- axis and the y- axis. Commonly these lines are drawn perpendicular to each other, and the quadrants, or regions, they determine are numbered counterclockwise, beginning with the upper right... Read more |
|
|
parabola
parabola , plane curve consisting of all points equidistant from a given fixed point (focus) and a given fixed line (directrix) (see illustration) . It is the conic section cut by a plane parallel to one of the elements of the cone. The axis of a parabola is the line through the focus... Read more |
|
Perpendicular
Perpendicular. Third and latest of the English Gothic architectural styles, also known as Third Pointed or Rectilinear, it followed from the previous Decorated or Second Pointed style. The Perp. style first emerged in designs of c.1332 for the chapter-house and cloisters of old St Paul's Cathedral,... Read more |
|
sextant
sextant instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other navigational, surveying, or astronomical applications. The term sextant is used generally to include related... Read more |
|
hyperbola
hyperbola , plane curve consisting of all points such that the difference between the distances from any point on the curve to two fixed points (foci) is the same for all points. It is the conic section formed by a plane cutting both nappes of the cone ; it thus has two parts, or branches. The... Read more |
|
|
Cartesian coordinates
Cartesian coordinates [for René Descartes ], system for representing the relative positions of points in a plane or in space. In a plane, the point P is specified by the pair of numbers ( x,y ) representing the distances of the point from two intersecting straight lines, referred to as... Read more |
|
thrill
... Read more |
|
polarization of light
polarization of light orientation of the vibration pattern of light waves in a singular plane. Characteristics of Polarization Polarization is a phenomenon peculiar to transverse waves, i.e., waves that vibrate in a direction perpendicular to their direction of propagation. Light is a transverse... Read more |
|
|
mesa
mesa [Span.,=table], name given in the SW United States to a small, isolated tableland or a flat-topped hill. Two or more of the sides are steep and usually perpendicular and some have all four sides practically perpendicular. Their bold lines make them a picturesque part of the landscape, and... Read more |
|
ellipse
ellipse closed plane curve consisting of all points for which the sum of the distances between a point on the curve and two fixed points (foci) is the same. It is the conic section formed by a plane cutting all the elements of the cone in the same nappe. The center of an ellipse is the point... Read more |
|
|
Huge, New Roller Coaster In the Works for Six Flags Over Texas Theme...
...Switzerland. Speed is one of the thrills of a hypercoaster, which...the ride of choice for any thrill-seeker." For the 1999...The floor would then lower, leaving riders suspended above the...causing the wheel to spin perpendicular to the ground. Those ... |
|
|
Life on the edge. (mountain-goat hunting)(includes related information on...
...coast of Washington, don't climb the perpendicular rain forests they call mountains. You...ominous name - the Witch's Wall. Before leaving home I'd promised my wife not to do...of all, but I've found quite enough thrills hunting goats in Montana, Idaho and... |