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  2. Radio-frequency skin tightening - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_skin...

    Radio-frequency skin tightening is an aesthetic technique that uses radio frequency (RF) energy to heat skin with the purpose of stimulating cutaneous collagen, elastin and hyaluronic acid production in order to reduce the appearance of fine lines and loose skin.

  3. Comparison of 3D computer graphics software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_3D_computer...

    Cinema 4D: 2022-04-20 S26 Maxon: macOS, Microsoft Windows, Amiga OS [4] Animation, Lighting, Modeling, Visual 3D Effects, Rendering, Simulation Proprietary: CityEngine: 2018-09-18 v 2018.1 Esri: macOS, Microsoft Windows, Linux: Procedural Modeling of 3D Cities Proprietary: Cobalt: 2020-02-04 v11 Ashlar-Vellum: macOS, Microsoft Windows

  4. 4D printing - Wikipedia

    en.wikipedia.org/wiki/4D_printing

    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 ...

  5. MX4D - Wikipedia

    en.wikipedia.org/wiki/MX4D

    MX4D is a 4D film presentation system developed by the American company MediaMation that allows a film to be augmented with environmental effects, such as motion, odors, and humidity. It uses theater seats which tilt forward, backward, and to the side in synchronization with onscreen motion, as well as air blasts, tactile effects, and other ...

  6. Comparison of pumps - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_pumps

    Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...

  7. Four-dimensional space - Wikipedia

    en.wikipedia.org/wiki/Four-dimensional_space

    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.

  8. Eejanaika (roller coaster) - Wikipedia

    en.wikipedia.org/wiki/Eejanaika_(roller_coaster)

    On 3 January 2009, slacking of the lift hill's chain caused an emergency stop, which ceased the coaster's operations for the day. Operations resumed the day after. On 29 April 2012, a bolt broke and fell from a running vehicle, hitting the forehead of a female park guest who was walking under the tracks, causing minor injuries.

  9. Photo print sizes - Wikipedia

    en.wikipedia.org/wiki/Photo_print_sizes

    The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...