Hooke’s claim on the law of gravity
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Since ancient times, Aristotle has represented the universe as transparent concentric spheres, with the Earth in the center, then, outwardly, the spheres of the Moon, the planets, and the fixed stars. But he did not try to give any explanation … Read More

Newton’s action at a distance – Different views
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Different authors have attempted to clarify the aspects of remote action and God’s involvement on the basis of textual investigations, mainly from the Mathematical Principles of Natural Philosophy, (Newton, 1999b) Newton’s correspondence with Richard Bentley (1692/93), (Bentley 1693) and Queries … Read More

Time Travel
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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

Eugenics
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Nicolae Sfetcu nicolae@sfetcu.com The term eugenics as a practice and field of study was invented by Francis Galton in 1883, in his book Inquiries into Human Faculty and Its Development (F. Galton 1983) based on the recent work of his … Read More

Predicate logic
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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

Linear motion
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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

Non-Cartesian dualism
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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

History of physics in prehistory and antiquity
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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

The illusion argument
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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

Nature of scientific concepts
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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

Schrödinger equation
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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

Philosophical analysis of faith
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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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