four-dimensional


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Related to four-dimensional: 4th Dimension

four-dimensional

, 4D (for″dĭ-men″shŏn-ăl)
Of or pert. to four dimensions. A technique that measures three spatial dimensions plus time is four-dimensional.
References in periodicals archive ?
Terminology of three-dimensional and four-dimensional ultrasound imaging of the fetal heart and other moving body parts.
The intrinsic Lorentz transformation/Lorentz transformation ([phi]LT/LT) was then derived from those diagrams in the positive and negative universes, thereby establishing intrinsic Lorentz invariance ([phi]LI) on flat two-dimensional intrinsic space-times and Lorentz invariance (LI) on flat four-dimensional spacetimes in the two universes in [1].
Pro-lifers point to the four-dimensional images to show that the child in the womb is a human being, with the same actions and expressions as any newborn baby.
Thus five, eight, ten, and twelve-fold rotations first appear in four-dimensional periodicity.
The flat two-dimensional proper intrinsic metric spacetimes denoted by ([phi][rho]', [phi]c[phi]t') and (-[phi][rho]'*, -[phi]c[phi]t'*), which underlies the flat four-dimensional proper metric spacetimes ([SIGMA]', ct') and (-[SIGMA]'*, -ct'*) of the positive and negative universes respectively, were introduced as ansatz in sub-section 4.
His mind was well and truly blown by a lecture in which he learned that our four-dimensional universe occupies a space in an 11-dimensional super-universe and that dark matter accounts for more mass than all the planets and stars put together.
It may take more than a four-dimensional, shape-shifting object and Carla Gugino's now-standard beautiful, smart, problem-solving leading lady to keep viewers coming back to sci-fi drama ``Threshold'' (9 p.
Instead, the ICA has mounted a kind of mega-one-person show, where earlier and more recent sculptures, drawings, and installations achieve a simultaneity of impact: To enter this four-dimensional lattice is to feel thrust across a threshold into Le Va's brain, where dreams, schemes, and obsessions mingle and coexist.
Some add devices to existing machines, and others are separate machines with special probes and features such as four-dimensional ultrasound.
Instead it may be just one of many three-dimensional, or 'three-brane' universes within a 'mother dimension' - a thin four-dimensional 'bulk space'.
The argument builds on the fact that four-dimensional entities extended in space as well as time are relativistically invariant in a way three-dimensional entities are not.
Clifford's was not a theory of gravitation, but rather a four-dimensional (space) theory of electromagnetism based on his friend James Clerk Maxwell's recent theory of electromagnetism.