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4D (4th Dimension, or Silver Surfer, as it was known during early development) is a relational database management system and integrated development environment developed by Laurent Ribardière. [3] 4D was created in 1984 [4] and had a slightly delayed public release for Macintosh in 1987 [5] [6] [7] with its own programming language. [1]
Stereolithography is a 3D-printing technique that uses photopolymerization to bind substrate that has been laid layer upon layer, creating a polymeric network. As opposed to fused-deposition modeling, where the extruded material hardens immediately to form layers, 4D printing is fundamentally based in stereolithography, where in most cases ultraviolet light is used to cure the layered ...
The 3D model of Berlin allows viewers to look at the city as it is now, as it once was, and as the city might turn into in the future. A 3D city model is digital model of urban areas that represent terrain surfaces, sites, buildings, vegetation, infrastructure and landscape elements in three-dimensional scale as well as related objects (e.g., city furniture) belonging to urban areas.
Model-based design (MBD) is a mathematical and visual method of addressing problems associated with designing complex control, [1] signal processing [2] and communication systems. It is used in many motion control , industrial equipment, aerospace , and automotive applications.
Methodologically, the learning sciences differs from other fields in educational research. It focuses on the study of learners, their localities, and their communities. The design-based research methodology is often used by learning scientists in their inquiries because this methodological framework considers the subject of study to be a complex system involving emergent properties that arise ...
4D, a 2010 album by Matthew Shipp "4-D" (The X-Files), an episode of The X-Files; 4D Audio Recording system, an audio recording system developed by Deutsche Grammophon; 4D film, a high technology film experience augmented with physical or environmental effects; 4DTV, a satellite TV broadcasting technology from Motorola; 4DX, a 4D film format
4D film is a presentation system combining motion pictures with synchronized physical effects that occur in the theater. Effects simulated in 4D films include motion, vibration , scent , rain, mist, bubbles, fog, smoke, wind, temperature changes, and strobe lights.
In 4D space, the Hopf angles {ξ 1, η, ξ 2} parameterize the 3-sphere. For fixed η they describe a torus parameterized by ξ 1 and ξ 2, with η = π / 4 being the special case of the Clifford torus in the xy - and uz-planes. These tori are not the usual tori found in 3D-space.