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  2. History of Solar System formation and evolution hypotheses

    en.wikipedia.org/wiki/History_of_Solar_System...

    French philosopher and mathematician René Descartes was the first to propose a model for the origin of the Solar System in his book The World, written from 1629 to 1633.. In his view, the Universe was filled with vortices of swirling particles, and both the Sun and planets had condensed from a large vortex that had contracted, which he thought could explain the circular motion of the plane

  3. Systems-centered therapy - Wikipedia

    en.wikipedia.org/wiki/Systems-centered_therapy

    Systems-centered therapy (SCT) is a particular form of group therapy based on the Theory of Living Human Systems developed by Yvonne Agazarian. The theory postulates that living human systems survive, develop, and transform from simple to complex through discriminating and integrating information.

  4. Dutch Systems Group - Wikipedia

    en.wikipedia.org/wiki/Dutch_Systems_Group

    The Dutch Systems Group, or Netherlands Society for Systems Research or Systeemgroep Nederland, is a society in the Netherlands for systems theory, and its applications.. Systems theoretical problems the society focuses on are, for example evolution, innovation, selection, variation, translation, participation and methodological innovat

  5. Lazarus Group - Wikipedia

    en.wikipedia.org/wiki/Lazarus_Group

    Lazarus Group (also known as Guardians of Peace or Whois Team [1] [2] [3]) is a hacker group made up of an unknown number of individuals, alleged to be run by the government of North Korea. While not much is known about the Lazarus Group, researchers have attributed many cyberattacks to them since 2010.

  6. The World (book) - Wikipedia

    en.wikipedia.org/wiki/The_World_(book)

    Descartes' Le Monde, 1664 The World, also called Treatise on the Light (French title: Traité du monde et de la lumière), is a book by René Descartes (1596–1650). Written between 1629 and 1633, it contains a nearly complete version of his philosophy, from method, to metaphysics, to physics and biology.

  7. Crystal system - Wikipedia

    en.wikipedia.org/wiki/Crystal_system

    The diamond crystal structure belongs to the face-centered cubic lattice, with a repeated two-atom pattern.. In crystallography, a crystal system is a set of point groups (a group of geometric symmetries with at least one fixed point).

  8. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time talking. These systems typically have access to multiple channels, up to 40-60, so multiple groups in the same area can communicate simultaneously.

  9. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    René Descartes is credited as the father of analytical geometry, the bridge between algebra and geometry, crucial to the discovery of infinitesimal calculus and analysis. In the 17th century, Descartes introduced Cartesian co-ordinates which allowed the development of analytic geometry, bring the notation of equations to geometry.