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(Top: original billiard ball trajectory. Middle: the billiard ball emerges from the future, and delivers its past self a strike that averts the past ball from entering the time machine. Bottom: the billiard ball never enters the time machine, giving … Read More
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Sfetcu, Nicolae, ” Karl Popper’s demarcation problem “, SetThings (January 24, 2019), MultiMedia Publishing (ed.), URL = https://www.telework.ro/en/karl-poppers-demarcation-problem/ Email: nicolae@sfetcu .com This book is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International. To view a copy of this license, visit http://creativecommons.org/licenses/by-nd/4.0/. … Read More
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Nicolae Sfetcu Email: nicolae@sfetcu.com The singularities from the general relativity resulting by solving Einstein’s equations were and still are the subject of many scientific debates: Are there singularities in spacetime, or not? Big Bang was an initial singularity? If singularities … Read More
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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
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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
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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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