70 relations: A Brief History of Time, Angular momentum, Big Bang, Black hole, Black hole electron, Black hole starship, Black hole thermodynamics, Black holes in fiction, Center of mass, Compton wavelength, Conservation of energy, Cosmic ray, Dark matter, Deuterium, Dimension, Einstein–Cartan theory, Electron, Electronvolt, Escape velocity, Event horizon, Fermi Gamma-ray Space Telescope, Fermion, Gamma-ray burst, General relativity, Gluon, Grand Unified Theory, Gravitational constant, Gravitational singularity, Hawking radiation, Holeum, Imperial Earth, John Archibald Wheeler, Kugelblitz (astrophysics), Large extra dimension, Large Hadron Collider, Lead, Leonard Susskind, Light-year, Microgram, Nat (unit), Neutron star, Nonlinear Dirac equation, Photon, Physical Review Letters, Planck constant, Planck length, Planck mass, Planck particle, Planck temperature, Primordial black hole, ..., Proton, Quantum, Quantum gravity, Quantum mechanics, Quark, Randall–Sundrum model, Safety of high-energy particle collision experiments, Schwarzschild radius, Seismology, Spacetime, Speed of light, Spin (physics), Stephen Hawking, String theory, Torsion tensor, Vacuum state, Virtual black hole, Virtual particle, Weakly interacting massive particles, White dwarf. Expand index (20 more) »

## A Brief History of Time

A Brief History of Time: From the Big Bang to Black Holes is a popular-science book on cosmology (the study of the universe) by British physicist Stephen Hawking.

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## Angular momentum

In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.

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## Big Bang

The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution.

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## Black hole

A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it.

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## Black hole electron

In physics, there is a speculative notion that if there were a black hole with the same mass, charge and angular momentum as an electron, it would share some of the properties of the electron.

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## Black hole starship

A black hole starship is a theoretical idea for enabling interstellar travel by propelling a starship by using a black hole as the energy source.

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## Black hole thermodynamics

In physics, black hole thermodynamics is the area of study that seeks to reconcile the laws of thermodynamics with the existence of black-hole event horizons.

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## Black holes in fiction

The study of black holes, gravitational sources so massive that even light cannot escape from them, goes back to the late 18th century.

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## Center of mass

In physics, the center of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero, or the point where if a force is applied it moves in the direction of the force without rotating.

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## Compton wavelength

The Compton wavelength is a quantum mechanical property of a particle.

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## Conservation of energy

In physics, the law of conservation of energy states that the total energy of an isolated system remains constant, it is said to be ''conserved'' over time.

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## Cosmic ray

Cosmic rays are high-energy radiation, mainly originating outside the Solar System and even from distant galaxies.

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## Dark matter

Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.

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## Deuterium

Deuterium (or hydrogen-2, symbol or, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1).

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## Dimension

In physics and mathematics, the dimension of a mathematical space (or object) is informally defined as the minimum number of coordinates needed to specify any point within it.

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## Einstein–Cartan theory

In theoretical physics, the Einstein–Cartan theory, also known as the Einstein–Cartan–Sciama–Kibble theory, is a classical theory of gravitation similar to general relativity.

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## Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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## Electronvolt

In physics, the electronvolt (symbol eV, also written electron-volt and electron volt) is a unit of energy equal to approximately joules (symbol J).

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## Escape velocity

In physics, escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body.

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## Event horizon

In general relativity, an event horizon is a region in spacetime beyond which events cannot affect an outside observer.

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## Fermi Gamma-ray Space Telescope

The Fermi Gamma-ray Space Telescope (FGST), formerly called the Gamma-ray Large Area Space Telescope (GLAST), is a space observatory being used to perform gamma-ray astronomy observations from low Earth orbit.

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## Fermion

In particle physics, a fermion is a particle that follows Fermi–Dirac statistics.

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## Gamma-ray burst

In gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies.

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## General relativity

General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.

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## Gluon

A gluon is an elementary particle that acts as the exchange particle (or gauge boson) for the strong force between quarks.

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## Grand Unified Theory

A Grand Unified Theory (GUT) is a model in particle physics in which, at high energy, the three gauge interactions of the Standard Model which define the electromagnetic, weak, and strong interactions, or forces, are merged into one single force.

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## Gravitational constant

The gravitational constant (also known as the "universal gravitational constant", the "Newtonian constant of gravitation", or the "Cavendish gravitational constant"), denoted by the letter, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's general theory of relativity.

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## Gravitational singularity

A gravitational singularity or spacetime singularity is a location in spacetime where the gravitational field of a celestial body becomes infinite in a way that does not depend on the coordinate system.

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## Hawking radiation

Hawking radiation is blackbody radiation that is predicted to be released by black holes, due to quantum effects near the event horizon.

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## Holeum

Holeums are hypothetical stable, quantized gravitational bound states of primordial or micro black holes.

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## Imperial Earth

Imperial Earth is a science fiction novel by British writer Arthur C. Clarke, published in 1975 by Gollancz Books.

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## John Archibald Wheeler

John Archibald Wheeler (July 9, 1911 – April 13, 2008) was an American theoretical physicist.

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## Kugelblitz (astrophysics)

In theoretical physics, a kugelblitz (German: "ball lightning") is a concentration of light or radiation so intense that its energy forms an event horizon and becomes self-trapped: according to general relativity and the equivalence of mass and energy, if enough radiation is aimed into a region, the concentration of energy can warp spacetime enough for the region to become a black hole (although this would be a black hole whose original mass-energy had been in the form of radiant energy rather than matter).

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## Large extra dimension

In particle physics, the ADD model, also known as the model with large extra dimensions (LED), is a model framework that attempts to solve the hierarchy problem by explaining the weakness of gravity relative to the other forces.

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## Large Hadron Collider

The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, the most complex experimental facility ever built and the largest single machine in the world.

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## Lead

Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82.

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## Leonard Susskind

Leonard Susskind (born 1940)his 60th birthday was celebrated with a special symposium at Stanford University.

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## Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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## Microgram

In the metric system, a microgram or microgramme (μg; the recommended symbol in the United States when communicating medical information is mcg) is a unit of mass equal to one millionth of a gram.

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## Nat (unit)

The natural unit of information (symbol: nat), sometimes also nit or nepit, is a unit of information or entropy, based on natural logarithms and powers of ''e'', rather than the powers of 2 and base 2 logarithms, which define the bit.

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## Neutron star

A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.

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## Nonlinear Dirac equation

In quantum field theory, the nonlinear Dirac equation is a model of self-interacting Dirac fermions.

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## Photon

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).

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## Physical Review Letters

Physical Review Letters (PRL), established in 1958, is a peer-reviewed, scientific journal that is published 52 times per year by the American Physical Society.

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## Planck constant

The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.

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## Planck length

In physics, the Planck length, denoted, is a unit of length, equal to metres.

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## Planck mass

In physics, the Planck mass, denoted by mP, is the unit of mass in the system of natural units known as Planck units.

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## Planck particle

A Planck particle, named after physicist Max Planck, is a hypothetical particle defined as a tiny black hole whose Compton wavelength is equal to its Schwarzschild radius.

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## Planck temperature

Planck temperature, denoted by TP, is the unit of temperature in the system of natural units known as Planck units.

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## Primordial black hole

Primordial black holes are a hypothetical type of black hole that formed soon after the Big Bang.

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## Proton

| magnetic_moment.

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## Quantum

In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction.

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## Quantum gravity

Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics, and where quantum effects cannot be ignored, such as near compact astrophysical objects where the effects of gravity are strong.

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## Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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## Quark

A quark is a type of elementary particle and a fundamental constituent of matter.

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## Randall–Sundrum model

In physics, Randall–Sundrum models (also called 5-dimensional warped geometry theory) are models that describe the world in terms of a warped geometry higher-dimensional universe, or more concretely as a 5-dimensional anti-de Sitter space where the elementary particles (except the graviton) are localized on a (3 + 1)-dimensional brane or branes.

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## Safety of high-energy particle collision experiments

The safety of high energy particle collisions was a topic of widespread discussion and topical interest during the time when the Relativistic Heavy Ion Collider (RHIC) and later the Large Hadron Collider (LHC)—currently the world's largest and most powerful particle accelerator—were being constructed and commissioned.

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## Schwarzschild radius

The Schwarzschild radius (sometimes historically referred to as the gravitational radius) is a physical parameter that shows up in the Schwarzschild solution to Einstein's field equations, corresponding to the radius defining the event horizon of a Schwarzschild black hole.

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## Seismology

Seismology (from Ancient Greek σεισμός (seismós) meaning "earthquake" and -λογία (-logía) meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.

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## Spacetime

In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum.

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## Speed of light

The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.

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## Spin (physics)

In quantum mechanics and particle physics, spin is an intrinsic form of angular momentum carried by elementary particles, composite particles (hadrons), and atomic nuclei.

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## Stephen Hawking

Stephen William Hawking (8 January 1942 – 14 March 2018) was an English theoretical physicist, cosmologist, and author, who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge at the time of his death.

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## String theory

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings.

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## Torsion tensor

In differential geometry, the notion of torsion is a manner of characterizing a twist or screw of a moving frame around a curve.

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## Vacuum state

In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy.

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## Virtual black hole

In quantum gravity, a virtual black hole is a black hole that exists temporarily as a result of a quantum fluctuation of spacetime.

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## Virtual particle

In physics, a virtual particle is a transient fluctuation that exhibits some of the characteristics of an ordinary particle, but whose existence is limited by the uncertainty principle.

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## Weakly interacting massive particles

Weakly interacting massive particles (WIMPs) are hypothetical particles that are thought to constitute dark matter.

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## White dwarf

A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.

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## Redirects here:

Artificial black hole, Extra-dimensional black hole, Micro Black hole, Micro black holes, Micro-black hole, Microscopic black holes, Micro–black hole, Mini Black Hole, Mini black hole, Mini black holes, Mini-black hole, Miniature black hole, Miniature black holes, Qmbh, Quantum black hole, Quantum gravity black holes, Quantum mechanical black hole.

## References

[1] https://en.wikipedia.org/wiki/Micro_black_hole