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91 relations: Amount of substance, Annalen der Physik, Arrhenius equation, Atomic mass, Avogadro constant, Bipolar junction transistor, Boltzmann constant, Boltzmann distribution, Calorie, Centimetre–gram–second system of units, Chemical kinetics, Classical mechanics, Committee on Data for Science and Technology, Conservatoire national des arts et métiers, Decibel watt, Degrees of freedom (physics and chemistry), Dimensional analysis, Dimensionless quantity, Electric current, Electric potential, Electronvolt, Elementary charge, Entropy, Entropy (information theory), Erg, Foot-pound (energy), Gas constant, General Conference on Weights and Measures, Hartree, Helium, Hertz, Heuristic, Ideal gas, Ideal gas law, Institute of Physics, International Bureau of Weights and Measures, International System of Units, Isolated system, Johnson–Nyquist noise, Joule, Kelvin, Kinetic energy, Kinetic theory of gases, KT (energy), Laboratoire national de métrologie et d'essais, Ludwig Boltzmann, Macroscopic scale, Max Planck, Maxwell–Boltzmann distribution, Microstate (statistical mechanics), ..., Mole (unit), Nat (unit), National Institute of Standards and Technology, National Physical Laboratory (United Kingdom), Natural logarithm, Natural units, Nobel Prize, Order of magnitude, Orders of magnitude (energy), Particle, Particle number, Partition function (statistical mechanics), P–n junction, Physical constant, Physikalisch-Technische Bundesanstalt, Planck constant, Planck mass, Planck temperature, Planck units, Planck's law, Pressure, Proposed redefinition of SI base units, Rankine scale, Relative atomic mass, Room temperature, Rydberg constant, Semiconductor, Shannon (unit), Shockley diode equation, Speed of light, Statistical mechanics, Temperature, Thermodynamic equilibrium, Thermodynamic temperature, Thermodynamics, Triple point, Uncertainty, Volume, Water (data page), Wavenumber, Xenon. Expand index (41 more) »
Amount of substance
Amount of substance (symbol for the quantity is 'n') is a standard-defined quantity that measures the size of an ensemble of elementary entities, such as atoms, molecules, electrons, and other particles.
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Annalen der Physik
Annalen der Physik (English: Annals of Physics) is one of the oldest scientific journals on physics and has been published since 1799.
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Arrhenius equation
The Arrhenius equation is a formula for the temperature dependence of reaction rates.
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Atomic mass
The atomic mass (ma) is the mass of an atom.
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Avogadro constant
In chemistry and physics, the Avogadro constant (named after scientist Amedeo Avogadro) is the number of constituent particles, usually atoms or molecules, that are contained in the amount of substance given by one mole.
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Bipolar junction transistor
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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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Boltzmann distribution
In statistical mechanics and mathematics, a Boltzmann distribution (also called Gibbs distribution Translated by J.B. Sykes and M.J. Kearsley. See section 28) is a probability distribution, probability measure, or frequency distribution of particles in a system over various possible states.
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Calorie
A calorie is a unit of energy.
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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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Chemical kinetics
Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes.
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Classical mechanics
Classical mechanics describes the motion of macroscopic objects, from projectiles to parts of machinery, and astronomical objects, such as spacecraft, planets, stars and galaxies.
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Committee on Data for Science and Technology
The Committee on Data for Science and Technology (CODATA) was established in 1966 as an interdisciplinary committee of the International Council for Science.
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Conservatoire national des arts et métiers
The Conservatoire national des arts et métiers (CNAM; National Conservatory of Arts and Crafts) is a doctoral degree-granting higher education establishment (or grand établissement) and Grande école in engineering, operated by the French government, dedicated to providing education and conducting research for the promotion of science and industry.
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Decibel watt
The decibel watt or dBW is a unit for the measurement of the strength of a signal expressed in decibels relative to one watt.
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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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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 quantity
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
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Electric current
An electric current is a flow of electric charge.
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Electric potential
An electric potential (also called the electric field potential, potential drop or the electrostatic potential) is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration.
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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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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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Entropy
In statistical mechanics, entropy is an extensive property of a thermodynamic system.
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Entropy (information theory)
Information entropy is the average rate at which information is produced by a stochastic source of data.
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Erg
The erg is a unit of energy and work equal to 10−7 joules.
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Foot-pound (energy)
The foot pound-force (symbol: ft⋅lbf or ft⋅lb) is a unit of work or energy in the Engineering and Gravitational Systems in United States customary and imperial units of measure.
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Gas constant
The gas constant is also known as the molar, universal, or ideal gas constant, denoted by the symbol or and is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure-volume product, rather than energy per temperature increment per particle.
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General Conference on Weights and Measures
The General Conference on Weights and Measures (Conférence générale des poids et mesures – CGPM) is the supreme authority of the International Bureau of Weights and Measures (Bureau international des poids et mesures – BIPM), the inter-governmental organization established in 1875 under the terms of the Metre Convention (Convention du Mètre) through which Member States act together on matters related to measurement science and measurement standards.
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Hartree
The hartree (symbol: Eh or Ha), also known as the Hartree energy, is the atomic unit of energy, named after the British physicist Douglas Hartree.
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Helium
Helium (from lit) is a chemical element with symbol He and atomic number 2.
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Hertz
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
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Heuristic
A heuristic technique (εὑρίσκω, "find" or "discover"), often called simply a heuristic, is any approach to problem solving, learning, or discovery that employs a practical method, not guaranteed to be optimal, perfect, logical, or rational, but instead sufficient for reaching an immediate goal.
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Ideal gas
An ideal gas is a theoretical gas composed of many randomly moving point particles whose only interactions are perfectly elastic collisions.
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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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Institute of Physics
The Institute of Physics (IOP) is a scientific charity that works to advance physics education, research and application.
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International Bureau of Weights and Measures
The International Bureau of Weights and Measures (Bureau international des poids et mesures) is an intergovernmental organization established by the Metre Convention, through which Member States act together on matters related to measurement science and measurement standards.
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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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Isolated system
In physical science, an isolated system is either of the following.
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Johnson–Nyquist noise
Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.
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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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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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Kinetic energy
In physics, the kinetic energy of an object is the energy that it possesses due to its motion.
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Kinetic theory of gases
The kinetic theory describes a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their many collisions with each other and with the walls of the container.
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KT (energy)
kT is the product of the Boltzmann constant, k, and the temperature, T. This product is used in physics as a scale factor for energy values in molecular-scale systems (sometimes it is used as a unit of energy), as the rates and frequencies of many processes and phenomena depend not on their energy alone, but on the ratio of that energy and kT, that is, on (see Arrhenius equation, Boltzmann factor).
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Laboratoire national de métrologie et d'essais
The Laboratoire national de métrologie et d'essais (National Laboratory of Metrology and Testing) is a French reference laboratory responsible for carrying out measurement and testing products of all kinds for their certification for placing them on the market.
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Ludwig Boltzmann
Ludwig Eduard Boltzmann (February 20, 1844 – September 5, 1906) was an Austrian physicist and philosopher whose greatest achievement was in the development of statistical mechanics, which explains and predicts how the properties of atoms (such as mass, charge, and structure) determine the physical properties of matter (such as viscosity, thermal conductivity, and diffusion).
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Macroscopic scale
The macroscopic scale is the length scale on which objects or phenomena are large enough to be visible almost practically with the naked eye, without magnifying optical instruments.
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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–Boltzmann distribution
In physics (in particular in statistical mechanics), the Maxwell–Boltzmann distribution is a particular probability distribution named after James Clerk Maxwell and Ludwig Boltzmann.
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Microstate (statistical mechanics)
In statistical mechanics, a microstate is a specific microscopic configuration of a thermodynamic system that the system may occupy with a certain probability in the course of its thermal fluctuations.
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Mole (unit)
The mole, symbol mol, is the SI unit of amount of substance.
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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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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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National Physical Laboratory (United Kingdom)
The National Physical Laboratory (NPL) is the national measurement standards laboratory for the United Kingdom, based at Bushy Park in Teddington, London, England.
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Natural logarithm
The natural logarithm of a number is its logarithm to the base of the mathematical constant ''e'', where e is an irrational and transcendental number approximately equal to.
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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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Nobel Prize
The Nobel Prize (Swedish definite form, singular: Nobelpriset; Nobelprisen) is a set of six annual international awards bestowed in several categories by Swedish and Norwegian institutions in recognition of academic, cultural, or scientific advances.
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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 (energy)
This list compares various energies in joules (J), organized by order of magnitude.
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Particle
In the physical sciences, a particle (or corpuscule in older texts) is a small localized object to which can be ascribed several physical or chemical properties such as volume, density or mass.
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Particle number
The particle number (or number of particles) of a thermodynamic system, conventionally indicated with the letter N, is the number of constituent particles in that system.
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Partition function (statistical mechanics)
In physics, a partition function describes the statistical properties of a system in thermodynamic equilibrium.
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P–n junction
A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor.
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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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Physikalisch-Technische Bundesanstalt
The Physikalisch-Technische Bundesanstalt (PTB) is the national metrology institute of the Federal Republic of Germany, with scientific and technical service tasks.
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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 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 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 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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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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Proposed redefinition of SI base units
The International Committee for Weights and Measures (CIPM) has proposed revised definitions of the SI base units, for consideration at the 26th General Conference on Weights and Measures (CGPM).
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Rankine scale
The Rankine scale is an absolute scale of thermodynamic temperature named after the Glasgow University engineer and physicist William John Macquorn Rankine, who proposed it in 1859.
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Relative atomic mass
Relative atomic mass (symbol: A) or atomic weight is a dimensionless physical quantity defined as the ratio of the average mass of atoms of a chemical element in a given sample to one unified atomic mass unit.
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Room temperature
Colloquially, room temperature is the range of air temperatures that most people prefer for indoor settings, which feel comfortable when wearing typical indoor clothing.
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Rydberg constant
The Rydberg constant, symbol R∞ for heavy atoms or RH for hydrogen, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to atomic spectra, in the science of spectroscopy.
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Semiconductor
A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.
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Shannon (unit)
The shannon (symbol: Sh), more commonly known as the bit, is a unit of information and of entropy defined by IEC 80000-13.
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Shockley diode equation
The Shockley diode equation or the diode law, named after transistor co-inventor William Shockley of Bell Telephone Laboratories, gives the I–V (current-voltage) characteristic of an idealized diode in either forward or reverse bias (applied voltage): where The equation is called the Shockley ideal diode equation when n, the ideality factor, is set equal to 1.
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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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Statistical mechanics
Statistical mechanics is one of the pillars of modern physics.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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Thermodynamic equilibrium
Thermodynamic equilibrium is an axiomatic concept of thermodynamics.
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Thermodynamic temperature
Thermodynamic temperature is the absolute measure of temperature and is one of the principal parameters of thermodynamics.
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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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Triple point
In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.
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Uncertainty
Uncertainty has been called "an unintelligible expression without a straightforward description".
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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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Water (data page)
This page provides supplementary data to the article properties of water.
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Wavenumber
In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance.
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Xenon
Xenon is a chemical element with symbol Xe and atomic number 54.
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Boltzman constant, Boltzman's constant, Boltzmann Constant, Boltzmann's Constant, Boltzmann's constant, Boltzmanns Constant, Boltzmanns constant, Boltzmann’s constant, Bolzmann constant, Dimensionless entropy, K boltzmann, Thermal voltage.
References
[1] https://en.wikipedia.org/wiki/Boltzmann_constant
