• A spherical design, part of combinatorial design theory in mathematics, is a finite set of N points on the d-dimensional unit d-sphere Sd such that the...
    5 KB (611 words) - 06:14, 5 May 2024
  • Thumbnail for Spherical coordinate system
    In mathematics, a spherical coordinate system specifies a given point in three-dimensional space by using a distance and two angles as its three coordinates...
    43 KB (6,355 words) - 18:22, 18 July 2025
  • of design of experiments. Two particularly important types of t-designs in quantum mechanics are projective and unitary t-designs. A spherical design is...
    14 KB (2,477 words) - 22:40, 10 June 2025
  • 2-(v,k,λ) design with k ≡ x ≡ y (mod 2) generates a binary self-orthogonal code (when bordered if k is odd). Room squares A spherical design is a finite...
    33 KB (4,367 words) - 12:36, 9 July 2025
  • Thumbnail for Spherical aberration
    In optics, spherical aberration (SA) is a type of aberration found in optical systems that have elements with spherical surfaces. This phenomenon commonly...
    10 KB (1,193 words) - 20:19, 31 May 2025
  • MiniGrail (section Design)
    antenna, a massive sphere designed to detect gravitational waves. The MiniGRAIL was the first such detector to use a spherical design. It is located at Leiden...
    7 KB (724 words) - 16:52, 28 May 2025
  • Thumbnail for Spherical cow
    The spherical cow is a humorous metaphor for highly simplified scientific models of complex phenomena. Originating in theoretical physics, the metaphor...
    10 KB (938 words) - 15:38, 24 May 2025
  • Thumbnail for Five-hundred-meter Aperture Spherical Telescope
    The Five-hundred-meter Aperture Spherical Telescope (FAST; Chinese: 五百米口径球面射电望远镜), nicknamed Tianyan (天眼, lit. "Sky's/Heaven's Eye"), is a radio telescope...
    40 KB (3,876 words) - 01:34, 25 June 2025
  • Thumbnail for Vostok (spacecraft)
    satellites. The descent module design was reused, in heavily modified form, by the Voskhod program. The craft consisted of a spherical descent module (mass 2...
    10 KB (1,078 words) - 05:59, 13 July 2025
  • Thumbnail for Panono
    with a resolution of 108 megapixels. The Panono camera features a spherical design that incorporates 36 individual lenses that simultaneously captures...
    5 KB (479 words) - 03:04, 13 April 2025
  • Thumbnail for Marina Bay Sands
    feature the company's first store that sits on water and one that is of spherical design. The luxury resort also features a performance venue Sands Theatre...
    66 KB (6,028 words) - 01:23, 19 July 2025
  • Thumbnail for Flat Earth
    Plato wrote about a spherical Earth. By about 330 BC, his former student Aristotle had provided strong empirical evidence for a spherical Earth. Knowledge...
    79 KB (9,129 words) - 06:34, 22 July 2025
  • Thumbnail for Nuclear weapon design
    The layer cake was an early design for a weapon using thermonuclear reactions, involving an spherical implosion bomb design that contained alternating...
    137 KB (17,478 words) - 16:38, 21 July 2025
  • Thumbnail for Three-mirror anastigmat
    addition the secondary is now easier to fabricate, as it is spherical rather than parabolic. This design is also called a Mersenne–Schmidt, since it uses a Mersenne...
    12 KB (1,385 words) - 04:19, 4 July 2025
  • Thumbnail for Containment building
    nearly spherical containment designs for PWRs have also been constructed. Depending on the material used, this is the most apparently logical design because...
    26 KB (3,264 words) - 23:22, 19 July 2025
  • September 2020, the fourth-generation Echo Dot was revealed with a new spherical design that was 30 percent smaller than the third-generation Echo. It features...
    64 KB (6,826 words) - 20:05, 16 July 2025
  • Thumbnail for Halbach array
    4/3 the amount for the ideal cylindrical design with the same inner and outer radii. However, for a spherical struction, access to the region of uniform...
    38 KB (5,348 words) - 17:42, 16 May 2025
  • Thumbnail for Nexus Q
    mixed reviews from critics following its unveiling. While its unique spherical design was praised, the Nexus Q was criticized for its lack of functionality...
    16 KB (1,679 words) - 07:01, 13 September 2024
  • Thumbnail for Spherical robot
    A spherical robot, also known as spherical mobile robot, or ball-shaped robot is a mobile robot with spherical external shape. A spherical robot is typically...
    10 KB (1,067 words) - 22:15, 12 May 2025
  • Thumbnail for Spherical roller bearing
    SKF. The design of the bearing that Arvid Palmgren invented is similar to the design that is still in use in modern machines. Most spherical roller bearings...
    7 KB (827 words) - 14:54, 30 May 2024
  • Thumbnail for History of the Teller–Ulam design
    The Teller–Ulam design is the technical concept behind thermonuclear weapons, also known as hydrogen bombs. The design relies on the radiation implosion...
    63 KB (7,241 words) - 01:37, 4 July 2025
  • originally modeled after those carried by B-52s but were adapted into a spherical design to more closely match Star Wars visuals. Depiction Within Star Wars...
    63 KB (6,976 words) - 05:06, 18 July 2025
  • The roughly spherical shape of Earth can be empirically evidenced by many different types of observation, ranging from ground level, flight, or orbit...
    47 KB (6,287 words) - 01:47, 17 July 2025
  • Thumbnail for Maksutov telescope
    "Mak") is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the...
    16 KB (1,736 words) - 14:49, 18 July 2025
  • Thumbnail for Ferris wheel
    to 2021, has externally mounted motorised capsules of a transparent spherical design, and is described as both a Ferris wheel and an observation wheel by...
    128 KB (9,857 words) - 18:34, 18 June 2025
  • Thumbnail for Spherical tokamak
    A spherical tokamak is a type of fusion power device based on the tokamak principle. It is notable for its very narrow profile, or aspect ratio. A traditional...
    46 KB (6,572 words) - 13:54, 1 February 2025
  • Thumbnail for PetroChina
    the characteristics of the oil and gas industry". The essentially spherical design of the logo, meant to exemplify PetroChina's global development stratagem...
    38 KB (3,529 words) - 16:06, 14 May 2025
  • Thumbnail for Thermonuclear weapon
    the Trident II SLBM, had a prolate primary (code-named Komodo) and a spherical secondary (code-named Cursa) inside a specially shaped radiation case...
    118 KB (13,488 words) - 14:15, 19 July 2025
  • Thumbnail for Spherical roller thrust bearing
    directions. The spherical roller thrust bearing was introduced by SKF in 1939. The design of the early bearings is similar to the design that is still in...
    5 KB (492 words) - 06:56, 5 May 2022
  • Horton sphere (redirect from Spherical tank)
    (sometimes spelled Hortonsphere), also referred to as a spherical tank or simply sphere, is a spherical pressure vessel, which is used for industrial-scale...
    6 KB (630 words) - 16:49, 8 June 2024