Islamic metaphysics
Metaphysics is a traditional branch of philosophy concerned with explaining the fundamental nature of being and the world that encompasses it, although the term is not easily defined. Traditionally, m...
Matter will be created from light within a year, claim scientists
In a neat demonstration of E=mc2, physicists believe they can create electrons and positrons from colliding photons
Matter
States of matter: solid, liquid, and gas.
Metaphysics (Aristotle)
Metaphysics (Greek: τὰ μετὰ τὰ φυσικά; Latin: Metaphysica) is one of the principal works of Aristotle and the first major work of the branch of philosophy with the same name. The principal subject is ...
Metaphysics (Aristotle) - Wikipedia
Problem of universals
In metaphysics, the problem of universals refers to the question of whether properties exist, and if so, what they are. Properties are qualities or relations that two or more entities have in common...
Nominalism
Nominalism is a metaphysical view in philosophy according to which general or abstract terms and predicates exist, while universals or abstract objects, which are sometimes thought to correspond to th...
Platonism
Platonism, rendered as a proper noun, is the philosophy of Plato or the name of other philosophical systems considered closely derived from it. In narrower usage, platonism, rendered as a common noun ...
Platonism - Wikipedia
Cosmology (metaphysics)
Cosmology (from the Greek κόσμος, kosmos "world" and -λογία, -logia "study of"), is the study of the origin, evolution, and eventual fate of the universe. Physical cosmology is the scholarly and scien...
Cosmology (metaphysics) - Wikipedia
Determinism
Determinism is the philosophical position that for every event, including human action, there exist conditions that could cause no other event. "There are many determinisms, depending upon what pre-co...
Determinism - Wikipedia
Free will
Free will is the ability of agents to make choices unimpeded by certain prevailing factors. Such prevailing factors that have been studied in the past have included metaphysical constraints (such as l...
Free will - Wikipedia
Identity and change
The relationship between identity and change in the philosophical field of metaphysics seems, at first glance, deceptively simple, and belies the complexity of the issues involved. This article explor...
Identity (philosophy)
In philosophy, identity, from Latin: identitas ("sameness"), is the relation each thing bears just to itself. The notion of identity gives rise to many philosophical problems, including the identi...
Philosophy of space and time
Philosophy of space and time is the branch of philosophy concerned with the issues surrounding the ontology, epistemology, and character of space and time. While such ideas have been central to philos...
Matter
Before the 20th century, the term matter included ordinary matter composed of atoms and excluded other energy phenomena such as light or sound. This concept of matter may be generalized from atoms to ...
Matter - Wikipedia
Materialism
Materialism is a form of philosophical monism which holds that matter is the fundamental substance in nature, and that all phenomena, including mental phenomena and consciousness, are the result of ma...
Philosophy of mind
Philosophy of mind is a branch of philosophy that studies the nature of the mind, mental events, mental functions, mental properties, consciousness, and their relationship to the physical body, part...
Philosophy of mind - Wikipedia
Modal logic
Modal logic is a type of formal logic primarily developed in the 1960s that extends classical propositional and predicate logic to include operators expressing modality. Modals—words that express moda...
Modal realism
Modal realism is the view propounded by David Kellogg Lewis that all possible worlds are as real as the actual world. It is based on the following tenets: possible worlds exist; possible worlds are no...
Evil demon
The evil demon, sometimes referred to as the evil genius, is a concept in Cartesian philosophy. In his 1641 Meditations on First Philosophy, René Descartes hypothesized the existence of an evil demon,...
Matter will be created from light within a year, claim scientists
In a neat demonstration of E=mc2, physicists believe they can create electrons and positrons from colliding photons
Nickel
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile. Pure...
Nickel - Wikipedia
Immirzi parameter
The Immirzi parameter (also known as the Barbero-Immirzi parameter) is a numerical coefficient appearing in loop quantum gravity, a nonperturbative theory of quantum gravity. The Immirzi parameter mea...
Dubnium
Dubnium is a chemical element with symbol Db and atomic number 105. It is named after the town of Dubna in Russia, where it was first produced. It is a synthetic element (an element that can be create...
Dubnium - Wikipedia
Encephalization quotient
Encephalization Quotient (EQ), or encephalization level is a measure of relative brain size defined as the ratio between actual brain mass and predicted brain mass for an animal of a given size, which...
Window operator
In modal logic, the window operator is a modal operator with the following semantic definition:for a Kripke model and . Informally, it says that w "sees" every φ-world (or every φ-world is seen by w...
Enactivism (psychology)
Enactivism argues that cognition arises through a dynamic interaction between an acting organism and its environment. It claims that our environment is one which we selectively create through our capa...
Bohr-van Leeuwen theorem
The Bohr–van Leeuwen theorem is a theorem in the field of statistical mechanics. The theorem states that when statistical mechanics and classical mechanics are applied consistently, the thermal averag...
Apothecaries' system
The apothecaries' system of weights is a historical system of mass units that were used by physicians and apothecaries for medical recipes, and also sometimes by scientists. The English version of the...
Apothecaries' system - Wikipedia
Grzywna (unit)
The grzywna (Proto-Slavic *grivĭna from Proto-Slavic *griva 'neck, nape') was a measure of weight, mainly for silver, commonly used throughout medieval central and eastern Europe, parti...
Grzywna (unit) - Wikipedia