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Four-dimensional space ( 4D) is the mathematical extension of the concept of three-dimensional space (3D). Three-dimensional space is the simplest possible abstraction of the observation that one needs only three numbers, called dimensions, to describe the sizes or locations of objects in the everyday world.
4-Digits (abbreviation: 4-D) is a lottery in Germany, Singapore, and Malaysia. Individuals play by choosing any number from 0000 to 9999. Then, twenty-three winning numbers are drawn each time. If one of the numbers matches the one that the player has bought, a prize is won.
In mathematics, the group of rotations about a fixed point in four-dimensional Euclidean space is denoted SO (4). The name comes from the fact that it is the special orthogonal group of order 4. In this article rotation means rotational displacement. For the sake of uniqueness, rotation angles are assumed to be in the segment [0, π] except ...
A UCLA-led team of scientists have captured the 4D movement of atoms through time and 3D space as they changed states, reportedly for the first time. The results were surprising and contradicted ...
To wit: engineers at the ARC Centre of Excellence for Electromaterials Science have created a 4D printer. That doesn’t mean the printer outputs objects into the space-time continuum.
Four-gradient. In differential geometry, the four-gradient (or 4-gradient) is the four-vector analogue of the gradient from vector calculus . In special relativity and in quantum mechanics, the four-gradient is used to define the properties and relations between the various physical four-vectors and tensors .
Light field. A light field, or lightfield, is a vector function that describes the amount of light flowing in every direction through every point in a space. The space of all possible light rays is given by the five-dimensional plenoptic function, and the magnitude of each ray is given by its radiance. Michael Faraday was the first to propose ...
Toto (lottery) Toto (est. in 1968 and stylised as TOTO) is a legalised form of lottery sold in Singapore, known by different names elsewhere. It is held by Singapore Pools, the only legal lottery operator in Singapore. [2] As of April 2015, it was the second most popular type of gambling activity after 4-Digits. [3]