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  2. On the Heavens - Wikipedia

    en.wikipedia.org/wiki/On_the_Heavens

    Sometimes Aristotle seems to regard them as living beings with a rational soul as their form [2] (see also Metaphysics, bk. XII). Aristotle proposed a geocentric model of the universe in De Caelo. The Earth is the center of motion of the universe, with circular motion being perfect because Earth was at the center of it.

  3. Aristotelian physics - Wikipedia

    en.wikipedia.org/wiki/Aristotelian_physics

    Aristotelian physics is the form of natural philosophy described in the works of the Greek philosopher Aristotle (384–322 BC). In his work Physics, Aristotle intended to establish general principles of change that govern all natural bodies, both living and inanimate, celestial and terrestrial – including all motion (change with respect to place), quantitative change (change with respect to ...

  4. Unmoved mover - Wikipedia

    en.wikipedia.org/wiki/Unmoved_mover

    In Book 12 (Ancient Greek: Λ) of his Metaphysics, Aristotle describes the unmoved mover as being perfectly beautiful, indivisible, and contemplating only the perfect contemplation: self-contemplation. He also equates this concept with the active intellect.

  5. Celestial spheres - Wikipedia

    en.wikipedia.org/wiki/Celestial_spheres

    In his Metaphysics, Aristotle developed a physical cosmology of spheres, based on the mathematical models of Eudoxus. In Aristotle's fully developed celestial model, the spherical Earth is at the centre of the universe and the planets are moved by either 47 or 55 interconnected spheres that form a unified planetary system, [19] whereas in the ...

  6. Concentric spheres - Wikipedia

    en.wikipedia.org/wiki/Concentric_spheres

    The cosmological model of concentric (or homocentric) spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all centered on the Earth. [1] [2] In this respect, it differed from the epicyclic and eccentric models with multiple centers, which were used by Ptolemy and other mathematical astronomers until the time of Copernicus.

  7. Hylomorphism - Wikipedia

    en.wikipedia.org/wiki/Hylomorphism

    Aristotle holds a teleological worldview: he sees the universe as inherently purposeful. Basically, Aristotle claims that potentiality exists for the sake of actuality. [53] Thus, matter exists for the sake of receiving its form, [54] as an organism has sight for the sake of seeing. [53] Now, each thing has certain potentialities as a result of ...

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  9. Nous - Wikipedia

    en.wikipedia.org/wiki/Nous

    In this period, Aristotle became "the Philosopher", and scholastic philosophers, like their Jewish and Muslim contemporaries, studied the concept of the intellectus on the basis not only of Aristotle, but also late classical interpreters like Augustine and Boethius. A European tradition of new and direct interpretations of Aristotle developed ...