Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. A vector space whose basis of real numbers has three vectors
Etymologies
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Examples

I utilized the initial threespace option of the Ubar's Scribe's Spearman.

Ãª are unit vectors in threespace, and then shows that these Quantum Mechanical expectation values violate Bell's Inequality.

We are familiar with the basics, the concept of free fall, spacetime curvature, invariant frames and so forth, and understand the possibility of an extra threespace in the structure.
Everything You Ever Wanted to Know About Quantum Mechanics, But Were Afraid to Ask

To illustrate with Euclidean threespace, its associated projective space is the unit sphere with antipodal points identified, forming a twodimensional manifold.

This state propagates not in ordinary threespace but in configuration space, where each point specifies the configuration of both particles.

That the guiding wave, in the general case, propagates not in ordinary threespace but in a multidimensionalconfiguration space is the origin of the notorious ˜nonlocality™ of quantum mechanics.

Distances were, in effect, greater between two points here than in threespace.

If the mansion stood on a hypersphere slightly greater in diameter than the mansion grounds, a person could move from any point to any other with what, in threespace, would seem to be right angles.

Rather than being the shortcut I had hoped, I encountered more timeintervals per second than in threespace.

The nearest had already dipped an arc into threespace, and was sending out concentric waves of energy, whose crosssection manifested themselves in our continuum, as music.
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