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207 relations: Acceleration, Action (physics), Age of the universe, Algebraic expression, Ampere, Angular frequency, Anthropocentrism, Apples and oranges, Area, Arthur Eddington, Base unit (measurement), Big Bang, Black body, Black hole, Black hole thermodynamics, Bohr radius, Boltzmann constant, Centimetre–gram–second system of units, CGh physics, Characteristic impedance, Charge density, Chronology of the universe, Cosmic microwave background, Cosmic time, Cosmological constant, Cosmology, Coulomb, Coulomb's constant, Coulomb's law, Cubic metre, Degrees of freedom (physics and chemistry), Density, Dimensional analysis, Dimensionless physical constant, Dimensionless quantity, Dirac equation, Dirac large numbers hypothesis, Divergence, Doubly special relativity, Eddington number, Edward Arthur Milne, Einstein field equations, Einstein–Hilbert action, Electric charge, Electric current, Electric field, Electrical resistance and conductance, Electromagnetism, Elementary charge, Elementary particle, ..., Energy, Energy density, Energy–momentum relation, Entropy (statistical thermodynamics), Event horizon, Extraterrestrial life, Field strength, Fine-structure constant, Flux, Force, Frank J. Tipler, Frank Wilczek, Friedmann equations, Gabriele Veneziano, Gauss's law, Gauss's law for gravity, General relativity, George Gamow, George Johnstone Stoney, Grand unification epoch, Grand Unified Theory, Gravitational constant, Gravitational field, Gravitational wave, Gravitoelectromagnetism, Hamiltonian (quantum mechanics), Henry (unit), Hubble's law, Ideal gas law, Impedance of free space, Inductance, Inflationary epoch, Intensity (physics), International System of Quantities, International System of Units, Inverse-square law, Jacob Bekenstein, John C. Baez, John D. Barrow, Joule, Journal of High Energy Physics, Kilogram, Kilogram per cubic metre, Kilometres per hour, Length, Light-year, Lorentz force, Magnetic field, Mass, Mass–energy equivalence, Max Planck, Maxwell's equations, Metre, Metre per second squared, Michael Duff (physicist), Momentum, Mr Tompkins, Names of large numbers, Nano-, National Institute of Standards and Technology, Natural units, Nature (journal), Newton (unit), Newton second, Newton's law of universal gravitation, Nondimensionalization, Observable universe, Ohm, Order of magnitude, Orders of magnitude (acceleration), Orders of magnitude (area), Orders of magnitude (current), Orders of magnitude (density), Orders of magnitude (energy), Orders of magnitude (force), Orders of magnitude (frequency), Orders of magnitude (inductance), Orders of magnitude (magnetic field), Orders of magnitude (mass), Orders of magnitude (momentum), Orders of magnitude (pressure), Orders of magnitude (resistance), Orders of magnitude (voltage), Orders of magnitude (volume), Parsec, Particle physics, Pascal (unit), Paul Dirac, Paul S. Wesson, Physical constant, Physical cosmology, Physical law, Physical Review Letters, Physicist, Planck acceleration, Planck charge, Planck constant, Planck energy, Planck force, Planck length, Planck mass, Planck momentum, Planck particle, Planck temperature, Planck time, Planck units, Planck's law, Planck–Einstein relation, Poisson's equation, Power (physics), Pressure, Proceedings of the Royal Society, Proton, Proton-to-electron mass ratio, Quantum field theory, Quantum gravity, Quantum mechanics, Radian per second, Roger Penrose, Schrödinger equation, Scientific modelling, Second, SI base unit, SI derived unit, Solar mass, Solid angle, Special relativity, Speed of light, Sphere, Square metre, Standard Model, Statistical mechanics, Stefan–Boltzmann constant, Stephen Hawking, Stoney units, Temperature, Tesla (unit), The Feynman Lectures on Physics, The Road to Reality, Theoretical physics, Theory of everything, Thermal energy, Thermodynamics, Time, Unit of measurement, Universe, University of Oregon, Vacuum, Vacuum permeability, Vacuum permittivity, Variable speed of light, Volt, Voltage, Volume, Watt, Zero-point energy, 1. Expand index (157 more) »
Acceleration
In physics, acceleration is the rate of change of velocity of an object with respect to time.
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Action (physics)
In physics, action is an attribute of the dynamics of a physical system from which the equations of motion of the system can be derived.
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Age of the universe
In physical cosmology, the age of the universe is the time elapsed since the Big Bang.
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Algebraic expression
In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number).
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Ampere
The ampere (symbol: A), often shortened to "amp",SI supports only the use of symbols and deprecates the use of abbreviations for units.
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Angular frequency
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.
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Anthropocentrism
Anthropocentrism (from Greek ἄνθρωπος, ánthrōpos, "human being"; and κέντρον, kéntron, "center") is the belief that human beings are the most significant entity of the universe.
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Apples and oranges
A comparison of apples and oranges occurs when two items or groups of items are compared that cannot be practically compared.
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Area
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane.
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Arthur Eddington
Sir Arthur Stanley Eddington (28 December 1882 – 22 November 1944) was an English astronomer, physicist, and mathematician of the early 20th century who did his greatest work in astrophysics.
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Base unit (measurement)
A base unit (also referred to as a fundamental unit) is a unit adopted for measurement of a base quantity.
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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 body
A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.
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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 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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Bohr radius
The Bohr radius (a0 or rBohr) is a physical constant, approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state.
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Boltzmann constant
The Boltzmann constant, which is named after Ludwig Boltzmann, is a physical constant relating the average kinetic energy of particles in a gas with the temperature of the gas.
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Centimetre–gram–second system of units
The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.
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CGh physics
cGh physics refers to the mainstream attempts in physics to unify relativity, gravitation and quantum mechanics, in particular following the ideas of Matvei Petrovich Bronstein and George Gamow.
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Characteristic impedance
The characteristic impedance or surge impedance (usually written Z0) of a uniform transmission line is the ratio of the amplitudes of voltage and current of a single wave propagating along the line; that is, a wave travelling in one direction in the absence of reflections in the other direction.
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Charge density
In electromagnetism, charge density is a measure of the amount of electric charge per unit length, surface area, or volume.
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Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.
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Cosmic microwave background
The cosmic microwave background (CMB, CMBR) is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology.
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Cosmic time
Cosmic time (also known as time since the big bang) is the time coordinate commonly used in the Big Bang models of physical cosmology.
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Cosmological constant
In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is the value of the energy density of the vacuum of space.
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Cosmology
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.
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Coulomb
The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.
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Coulomb's constant
Coulomb's constant, the electric force constant, or the electrostatic constant (denoted) is a proportionality constant in electrodynamics equations.
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Coulomb's law
Coulomb's law, or Coulomb's inverse-square law, is a law of physics for quantifying the amount of force with which stationary electrically charged particles repel or attract each other.
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Cubic metre
The cubic metre (in British English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the SI derived unit of volume.
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Degrees of freedom (physics and chemistry)
In physics, a degree of freedom is an independent physical parameter in the formal description of the state of a physical system.
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Density
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
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Dimensional analysis
In engineering and science, dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities (such as length, mass, time, and electric charge) and units of measure (such as miles vs. kilometers, or pounds vs. kilograms) and tracking these dimensions as calculations or comparisons are performed.
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Dimensionless physical constant
In physics, a dimensionless physical constant, sometimes called a fundamental physical constant, is a physical constant that is dimensionless.
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Dimensionless quantity
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
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Dirac equation
In particle physics, the Dirac equation is a relativistic wave equation derived by British physicist Paul Dirac in 1928.
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Dirac large numbers hypothesis
The Dirac large numbers hypothesis (LNH) is an observation made by Paul Dirac in 1937 relating ratios of size scales in the Universe to that of force scales.
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Divergence
In vector calculus, divergence is a vector operator that produces a scalar field, giving the quantity of a vector field's source at each point.
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Doubly special relativity
Doubly special relativity (DSR) – also called deformed special relativity or, by some, extra-special relativity – is a modified theory of special relativity in which there is not only an observer-independent maximum velocity (the speed of light), but an observer-independent maximum energy scale and minimum length scale (the Planck energy and Planck length).
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Eddington number
In astrophysics, the Eddington number, NEdd, is the number of protons in the observable universe.
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Edward Arthur Milne
Edward Arthur Milne FRS (14 February 1896 – 21 September 1950) was a British astrophysicist and mathematician.
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Einstein field equations
The Einstein field equations (EFE; also known as Einstein's equations) comprise the set of 10 equations in Albert Einstein's general theory of relativity that describe the fundamental interaction of gravitation as a result of spacetime being curved by mass and energy.
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Einstein–Hilbert action
The Einstein–Hilbert action (also referred to as Hilbert action) in general relativity is the action that yields the Einstein field equations through the principle of least action.
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Electric charge
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
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Electric current
An electric current is a flow of electric charge.
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Electric field
An electric field is a vector field surrounding an electric charge that exerts force on other charges, attracting or repelling them.
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Electrical resistance and conductance
The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
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Electromagnetism
Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.
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Elementary charge
The elementary charge, usually denoted as or sometimes, is the electric charge carried by a single proton, or equivalently, the magnitude of the electric charge carried by a single electron, which has charge.
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Elementary particle
In particle physics, an elementary particle or fundamental particle is a particle with no substructure, thus not composed of other particles.
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Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
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Energy density
Energy density is the amount of energy stored in a given system or region of space per unit volume.
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Energy–momentum relation
In physics, the energy–momentum relation, or relativistic dispersion relation, is the relativistic equation relating any object's rest (intrinsic) mass, total energy, and momentum: holds for a system, such as a particle or macroscopic body, having intrinsic rest mass, total energy, and a momentum of magnitude, where the constant is the speed of light, assuming the special relativity case of flat spacetime.
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Entropy (statistical thermodynamics)
In classical statistical mechanics, the entropy function earlier introduced by Rudolf Clausius is interpreted as statistical entropy using probability theory.
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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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Extraterrestrial life
Extraterrestrial life,Where "extraterrestrial" is derived from the Latin extra ("beyond", "not of") and terrestris ("of Earth", "belonging to Earth").
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Field strength
In physics, field strength means the magnitude of a vector-valued field (e.g., in volts per meter, V/m, for an electric field E).
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Fine-structure constant
In physics, the fine-structure constant, also known as Sommerfeld's constant, commonly denoted (the Greek letter ''alpha''), is a fundamental physical constant characterizing the strength of the electromagnetic interaction between elementary charged particles.
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Flux
Flux describes the quantity which passes through a surface or substance.
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Force
In physics, a force is any interaction that, when unopposed, will change the motion of an object.
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Frank J. Tipler
Frank Jennings Tipler (born February 1, 1947) is an American mathematical physicist and cosmologist, holding a joint appointment in the Departments of Mathematics and Physics at Tulane University.
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Frank Wilczek
Frank Anthony Wilczek (born May 15, 1951) is an American theoretical physicist, mathematician and a Nobel laureate.
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Friedmann equations
The Friedmann equations are a set of equations in physical cosmology that govern the expansion of space in homogeneous and isotropic models of the universe within the context of general relativity.
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Gabriele Veneziano
Gabriele Veneziano (born 7 September 1942) is an Italian theoretical physicist and one of the pioneers of string theory.
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Gauss's law
In physics, Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field.
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Gauss's law for gravity
In physics, Gauss's law for gravity, also known as Gauss's flux theorem for gravity, is a law of physics that is essentially equivalent to Newton's law of universal gravitation.
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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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George Gamow
George Gamow (March 4, 1904- August 19, 1968), born Georgiy Antonovich Gamov, was a Russian-American theoretical physicist and cosmologist.
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George Johnstone Stoney
George Johnstone Stoney FRS (15 February 1826 – 5 July 1911) was an Irish physicist.
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Grand unification epoch
In physical cosmology, assuming that nature is described by a Grand Unified Theory, the grand unification epoch was the period in the evolution of the early universe following the Planck epoch, starting at about 10−43 seconds after the Big Bang, in which the temperature of the universe was comparable to the characteristic temperatures of grand unified theories.
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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 field
In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body.
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Gravitational wave
Gravitational waves are the disturbance in the fabric ("curvature") of spacetime generated by accelerated masses and propagate as waves outward from their source at the speed of light.
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Gravitoelectromagnetism
Gravitoelectromagnetism, abbreviated GEM, refers to a set of formal analogies between the equations for electromagnetism and relativistic gravitation; specifically: between Maxwell's field equations and an approximation, valid under certain conditions, to the Einstein field equations for general relativity.
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Hamiltonian (quantum mechanics)
In quantum mechanics, a Hamiltonian is an operator corresponding to the total energy of the system in most of the cases.
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Henry (unit)
The henry (symbol: H) is the SI derived unit of electrical inductance.
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Hubble's law
Hubble's law is the name for the observation in physical cosmology that.
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Ideal gas law
The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas.
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Impedance of free space
The impedance of free space,, is a physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space.
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Inductance
In electromagnetism and electronics, inductance is the property of an electrical conductor by which a change in electric current through it induces an electromotive force (voltage) in the conductor.
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Inflationary epoch
In physical cosmology the inflationary epoch was the period in the evolution of the early universe when, according to inflation theory, the universe underwent an extremely rapid exponential expansion.
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Intensity (physics)
In physics, intensity is the power transferred per unit area, where the area is measured on the plane perpendicular to the direction of propagation of the energy.
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International System of Quantities
The International System of Quantities (ISQ) is a system based on seven base quantities: length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity.
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International System of Units
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
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Inverse-square law
The inverse-square law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity.
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Jacob Bekenstein
Jacob David Bekenstein (יעקב בקנשטיין; May 1, 1947 – August 16, 2015) was a Mexican-born Israeli-American theoretical physicist who made fundamental contributions to the foundation of black hole thermodynamics and to other aspects of the connections between information and gravitation.
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John C. Baez
John Carlos Baez (born June 12, 1961) is an American mathematical physicist and a professor of mathematics at the University of California, Riverside (UCR) in Riverside, California.
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John D. Barrow
John David Barrow (born 29 November 1952) is an English cosmologist, theoretical physicist, and mathematician.
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Joule
The joule (symbol: J) is a derived unit of energy in the International System of Units.
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Journal of High Energy Physics
The Journal of High Energy Physics is a peer-reviewed, open access scientific journal covering the field of high energy physics.
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Kilogram
The kilogram or kilogramme (symbol: kg) is the base unit of mass in the International System of Units (SI), and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "Le Grand K" or "Big K"), a cylinder of platinum-iridium alloy stored by the International Bureau of Weights and Measures at Saint-Cloud, France.
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Kilogram per cubic metre
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres.
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Kilometres per hour
The kilometre per hour (American English: kilometer per hour) is a unit of speed, expressing the number of kilometres travelled in one hour.
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Length
In geometric measurements, length is the most extended dimension of an object.
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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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Lorentz force
In physics (particularly in electromagnetism) the Lorentz force is the combination of electric and magnetic force on a point charge due to electromagnetic fields.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
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Mass–energy equivalence
In physics, mass–energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Albert Einstein's famous formula: E.
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Max Planck
Max Karl Ernst Ludwig Planck, FRS (23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918.
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Maxwell's equations
Maxwell's equations are a set of partial differential equations that, together with the Lorentz force law, form the foundation of classical electromagnetism, classical optics, and electric circuits.
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Metre
The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit mètre, from the Greek noun μέτρον, "measure") is the base unit of length in some metric systems, including the International System of Units (SI).
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Metre per second squared
The metre per second squared is the unit of acceleration in the International System of Units (SI).
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Michael Duff (physicist)
Michael James Duff FRS, FRSA is a British theoretical physicist and pioneering theorist of supergravity who is the Principal of the Faculty of Physical Sciences and Abdus Salam Chair of Theoretical Physics at Imperial College London.
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Momentum
In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.
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Mr Tompkins
Mr Tompkins is the title character in a series of four popular science books by the physicist George Gamow.
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Names of large numbers
This article lists and discusses the usage and derivation of names of large numbers, together with their possible extensions.
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Nano-
Nano- (symbol n) is a unit prefix meaning "one billionth".
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National Institute of Standards and Technology
The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.
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Natural units
In physics, natural units are physical units of measurement based only on universal physical constants.
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Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
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Newton (unit)
The newton (symbol: N) is the International System of Units (SI) derived unit of force.
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Newton second
The newton second (also newton-second, symbol N s or N·s) is the derived SI unit of impulse.
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Newton's law of universal gravitation
Newton's law of universal gravitation states that a particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
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Nondimensionalization
Nondimensionalization is the partial or full removal of units from an equation involving physical quantities by a suitable substitution of variables.
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Observable universe
The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects has had time to reach Earth since the beginning of the cosmological expansion.
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Ohm
The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.
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Order of magnitude
An order of magnitude is an approximate measure of the number of digits that a number has in the commonly-used base-ten number system.
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Orders of magnitude (acceleration)
This page lists examples of the acceleration occurring in various situations.
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Orders of magnitude (area)
This page is a progressive and labelled list of the SI area orders of magnitude, with certain examples appended to some list objects.
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Orders of magnitude (current)
To help compare different orders of magnitude, the following list describes various ampere levels.
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Orders of magnitude (density)
No description.
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Orders of magnitude (energy)
This list compares various energies in joules (J), organized by order of magnitude.
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Orders of magnitude (force)
The following list shows different orders of magnitude of force.
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Orders of magnitude (frequency)
To help compare different orders of magnitude, the following list describes various frequencies, which is measured in hertz.
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Orders of magnitude (inductance)
This page is a progressive and labeled list of the SI inductance orders of magnitude, with certain examples appended to some list objects.
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Orders of magnitude (magnetic field)
This page lists examples of magnetic induction B in teslas and gauss produced by various sources, grouped by orders of magnitude.
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Orders of magnitude (mass)
To help compare different orders of magnitude, the following lists describe various mass levels between 10−40 kg and 1053 kg.
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Orders of magnitude (momentum)
The following table lists various orders of magnitude for momentum.
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Orders of magnitude (pressure)
This is a tabulated listing of the orders of magnitude in relation to pressure expressed in pascals.
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Orders of magnitude (resistance)
No description.
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Orders of magnitude (voltage)
To help compare different orders of magnitude, the following list describes various voltage levels.
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Orders of magnitude (volume)
The table lists various objects and units by the order of magnitude of their volume.
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Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
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Particle physics
Particle physics (also high energy physics) is the branch of physics that studies the nature of the particles that constitute matter and radiation.
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Pascal (unit)
The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.
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Paul Dirac
Paul Adrien Maurice Dirac (8 August 1902 – 20 October 1984) was an English theoretical physicist who is regarded as one of the most significant physicists of the 20th century.
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Paul S. Wesson
Paul S. Wesson, B.Sc., Ph.D., D.Sc., F.R.A.S (September 11, 1949 – September 16, 2015) was a professor of astrophysics and theoretical physics.
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Physical constant
A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that is generally believed to be both universal in nature and have constant value in time.
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Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate.
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Physical law
A physical law or scientific law is a theoretical statement "inferred from particular facts, applicable to a defined group or class of phenomena, and expressible by the statement that a particular phenomenon always occurs if certain conditions be present." Physical laws are typically conclusions based on repeated scientific experiments and observations over many years and which have become accepted universally within the scientific community.
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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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Physicist
A physicist is a scientist who has specialized knowledge in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe.
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Planck acceleration
The Planck acceleration is the acceleration from zero speed to the speed of light during one Planck time.
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Planck charge
In physics, the Planck charge, denoted by q_\text, is one of the base units in the system of natural units called Planck units.
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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 energy
In physics, Planck energy, denoted by, is the unit of energy in the system of natural units known as Planck units.
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Planck force
Planck force is the derived unit of force resulting from the definition of the base Planck units for time, length, and mass.
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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 momentum
Planck momentum is the unit of momentum 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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Planck time
In quantum mechanics, the Planck time is the unit of time in the system of natural units known as Planck units.
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Planck units
In particle physics and physical cosmology, Planck units are a set of units of measurement defined exclusively in terms of five universal physical constants, in such a manner that these five physical constants take on the numerical value of 1 when expressed in terms of these units.
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Planck's law
Planck's law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T. The law is named after Max Planck, who proposed it in 1900.
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Planck–Einstein relation
The Planck–Einstein relationFrench & Taylor (1978), pp.
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Poisson's equation
In mathematics, Poisson's equation is a partial differential equation of elliptic type with broad utility in mechanical engineering and theoretical physics.
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Power (physics)
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
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Pressure
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
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Proceedings of the Royal Society
Proceedings of the Royal Society is the parent title of two scientific journals published by the Royal Society.
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Proton
| magnetic_moment.
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Proton-to-electron mass ratio
In physics, the proton-to-electron mass ratio, μ or β, is simply the rest mass of the proton divided by that of the electron.
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Quantum field theory
In theoretical physics, quantum field theory (QFT) is the theoretical framework for constructing quantum mechanical models of subatomic particles in particle physics and quasiparticles in condensed matter physics.
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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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Radian per second
The radian per second (symbol: rad·s−1 or rad/s) is the SI unit of rotational speed (angular velocity), commonly denoted by the Greek letter ω (omega).
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Roger Penrose
Sir Roger Penrose (born 8 August 1931) is an English mathematical physicist, mathematician and philosopher of science.
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Schrödinger equation
In quantum mechanics, the Schrödinger equation is a mathematical equation that describes the changes over time of a physical system in which quantum effects, such as wave–particle duality, are significant.
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Scientific modelling
Scientific modelling is a scientific activity, the aim of which is to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate by referencing it to existing and usually commonly accepted knowledge.
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Second
The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.
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SI base unit
The International System of Units (SI) defines seven units of measure as a basic set from which all other SI units can be derived.
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SI derived unit
SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI).
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Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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Solid angle
In geometry, a solid angle (symbol) is a measure of the amount of the field of view from some particular point that a given object covers.
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Special relativity
In physics, special relativity (SR, also known as the special theory of relativity or STR) is the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time.
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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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Sphere
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").
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Square metre
The square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (Unicode character). It is the area of a square whose sides measure exactly one metre.
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Standard Model
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (the electromagnetic, weak, and strong interactions, and not including the gravitational force) in the universe, as well as classifying all known elementary particles.
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Statistical mechanics
Statistical mechanics is one of the pillars of modern physics.
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Stefan–Boltzmann constant
The Stefan–Boltzmann constant (also Stefan's constant), a physical constant denoted by the Greek letter ''σ'' (sigma), is the constant of proportionality in the Stefan–Boltzmann law: "the total intensity radiated over all wavelengths increases as the temperature increases", of a black body which is proportional to the fourth power of the thermodynamic temperature.
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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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Stoney units
In physics the Stoney units form a system of units named after the Irish physicist George Johnstone Stoney, who first proposed them in 1881.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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Tesla (unit)
The tesla (symbol T) is a derived unit of magnetic flux density (informally, magnetic field strength) in the International System of Units.
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The Feynman Lectures on Physics
The Feynman Lectures on Physics is a physics textbook based on some lectures by Richard P. Feynman, a Nobel laureate who has sometimes been called "The Great Explainer".
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The Road to Reality
The Road to Reality: A Complete Guide to the Laws of the Universe is a book on modern physics by the British mathematical physicist Roger Penrose, published in 2004.
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Theoretical physics
Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena.
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Theory of everything
A theory of everything (ToE), final theory, ultimate theory, or master theory is a hypothetical single, all-encompassing, coherent theoretical framework of physics that fully explains and links together all physical aspects of the universe.
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Thermal energy
Thermal energy is a term used loosely as a synonym for more rigorously-defined thermodynamic quantities such as the internal energy of a system; heat or sensible heat, which are defined as types of transfer of energy (as is work); or for the characteristic energy of a degree of freedom in a thermal system kT, where T is temperature and k is the Boltzmann constant.
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Thermodynamics
Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work.
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Time
Time is the indefinite continued progress of existence and events that occur in apparently irreversible succession from the past through the present to the future.
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Unit of measurement
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
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Universe
The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
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University of Oregon
The University of Oregon (also referred to as UO, U of O or Oregon) is a public flagship research university in Eugene, Oregon.
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Vacuum
Vacuum is space devoid of matter.
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Vacuum permeability
The physical constant μ0, (pronounced "mu naught" or "mu zero"), commonly called the vacuum permeability, permeability of free space, permeability of vacuum, or magnetic constant, is an ideal, (baseline) physical constant, which is the value of magnetic permeability in a classical vacuum.
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Vacuum permittivity
The physical constant (pronounced as "epsilon nought"), commonly called the vacuum permittivity, permittivity of free space or electric constant, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum.
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Variable speed of light
A variable speed of light (VSL) is a feature of a family of hypotheses stating that the speed of light in vacuum, usually denoted by c, may in some way not be constant, e.g. varying in space or time, or depending on frequency.
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Volt
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
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Voltage
Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.
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Volume
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
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Watt
The watt (symbol: W) is a unit of power.
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Zero-point energy
Zero-point energy (ZPE) or ground state energy is the lowest possible energy that a quantum mechanical system may have.
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1
1 (one, also called unit, unity, and (multiplicative) identity) is a number, numeral, and glyph.
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References
[1] https://en.wikipedia.org/wiki/Planck_units
