1) Four-dimensional geometry
Found on
https://www.crosswordclues.com/clue/hypercone
It is a quadric surface, and is one of the possible 3-manifolds which are 4-dimensional equivalents of the conical surface in 3 dimensions. It is also named spherical cone because its intersections with hyperplanes perpendicular to the w-axis are spheres. A four-dimensional right spherical hypercone can be thought of as a sphere which expands with...
Found on
http://en.wikipedia.org/wiki/Hypercone
[spacecraft] A hypercone is a mechanism for atmospheric reentry deceleration proposed for use by future Mars landing missions. It is an inflatable structure combining characteristics of both heat shields and parachutes. The hypercone is intended to supplement other deceleration mechanisms, bridging a gap in capability between conventional h...
Found on
http://en.wikipedia.org/wiki/Hypercone_(spacecraft)
No exact match found.
