# Columbia Encyclopedia

## Search results

184 results found

## Axis

(Encyclopedia)Axis, coalition of countries headed by Germany, Italy, and Japan, 1936–45 (see World War II). The expression “Rome-Berlin axis” originated in Oct., 1936, with an accord reached by Hitler and Mus...

## Cartesian coordinates

(Encyclopedia)CE5 Cartesian coordinates Cartesian coordinates kärtēˈzhən [key] [for René Descartes], system for representing the relative positions of points in a plane or in space. In a plane, the point P...

## gyroscope

(Encyclopedia)CE5 Three-frame gyroscope gyroscope jīˈrəskōpˌ [key], symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the gyroscope has special p...

## ellipse

(Encyclopedia)CE5 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 fo...

## Anti-Comintern Pact

(Encyclopedia)Anti-Comintern Pact: see Comintern and Axis. ...

## hyperbola

(Encyclopedia)CE5 Hyperbola hyperbola hīpûrˈbələ [key], 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 sam...

## South Pole

(Encyclopedia)South Pole, southern end of the earth's axis, by convention at lat. 90° S. Because the earth's rotational axis wobbles slightly over time, the location where the southern end of the axis intersects t...

## parabola

(Encyclopedia)CE5 Parabola parabola pərăbˈələ [key], 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...