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Time travel involves traveling in a time different from the present, in the past or in the future, basically without a space travel with reference to a local coordinate system. Time travel can be made by a material body that … Read More
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Predicate logic, also known as first-order logic and first-order predicate calculus, is a formalization of the language of mathematics, proposed by Gottlob Frege, between the end of the nineteenth century and the beginning of the twentieth century. In predicate logic, … Read More
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In physics, and more particularly in mechanics, a linear motion is a movement that takes place along a straight line. During a rectilinear motion, the velocity vector v retains its direction, its value being able to remain constant (uniform linear … Read More
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(Different approaches toward resolving the mind–body problem) Malebranche and occasionalism The action of the body on the mind and of the mind on the body is impossible; consequently, it is God who acts alone, conforming the will of the mind … Read More
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The history of physics traces the origin and evolution of currents of thought and knowledge in the physical sciences. Themes Several parallel issues overlap over the centuries: determinism and probabilistic physics; Laplace has scarcely conceived the project of a total … Read More
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In the philosophy of perception, the argument of illusion is an argument in favor of the thesis that we never perceive anything but sense data. It presents itself as a critique of direct realism and relies on the most common … Read More
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(Naïve realism argues we perceive the world directly) Science is concerned both by the utterance of hypotheses concerning the nature of the world, and the verification of these theories as adequate to reality according to an experimental method, which differs … Read More
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Schrödinger equation, developed by the Austrian physicist Erwin Schrödinger in 1925, is a fundamental equation in quantum mechanics. It describes the evolution over time of a massive non-relativistic particle, and thus fulfills the same role as the fundamental relation of … Read More
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(Allegory and symbols of faith in Christianity.) Faith, according to the most common meaning, is the disposition to accept as true information that is not directly known, based on the authority of others (teacher, friend, a document, etc.). In the … Read More
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