82 relations: Annihilation, Atomic physics, Avogadro constant, B meson, Bevatron, Billion, Boltzmann constant, Bond energy, Cosmic microwave background, Coulomb, Covalent bond, Deuterium, Electron, Elementary charge, Exa-, Exponential decay, Faraday constant, Fine-structure constant, Germanium, GEV, Grand unification energy, Hadron, Helium-4, Higgs boson, Hydrogen atom, IceCube Neutrino Observatory, International System of Units, Invariant mass, Ion, Joule, Kelvin, Kev, Kinetic theory of gases, Large Hadron Collider, Light-year, Litre, Magnetic confinement fusion, Mass, Mass–energy equivalence, Metric prefix, MEV, Momentum, Mosquito, Natural units, Neutral particle oscillation, Nuclear fission, Nuclear fusion, Nuclear physics, Oh-My-God particle, Order of magnitude, ..., Orders of magnitude (energy), Particle physics, PEV, Photoelectric effect, Photon energy, Phototube, Physics, Picosecond, Planck constant, Planck energy, Plasma (physics), Plutonium-239, Positron, Proton, Relativistic Breit–Wigner distribution, Scattering length, Scintillation (physics), Silicon, Solid-state physics, Speed of light, Standard deviation, TEV, Thermal energy, TNT equivalent, Tritium, Unified atomic mass unit, Units of energy, Uranium-235, Vacuum permeability, Volt, Voltage, Yotta-. Expand index (32 more) » « Shrink index
In particle physics, annihilation is the process that occurs when a subatomic particle collides with its respective antiparticle to produce other particles, such as an electron colliding with a positron to produce two photons.
Atomic physics is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus.
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.
In particle physics, B mesons are mesons composed of a bottom antiquark and either an up, down, strange or charm quark.
The Bevatron was a particle accelerator — specifically, a weak-focusing proton synchrotron — at Lawrence Berkeley National Laboratory, U.S., which began operating in 1954.
A billion is a number with two distinct definitions.
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.
In chemistry, bond energy (E) or bond enthalpy (H) is the measure of bond strength in a chemical bond.
The cosmic microwave background (CMB, CMBR) is electromagnetic radiation as a remnant from an early stage of the universe in Big Bang cosmology.
The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
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).
The electron is a subatomic particle, symbol or, whose electric charge is negative one 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.
Exa is a decimal unit prefix in the metric system denoting 1018 or.
A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.
The Faraday constant, denoted by the symbol and sometimes stylized as ℱ, is named after Michael Faraday.
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.
Germanium is a chemical element with symbol Ge and atomic number 32.
GEV may refer to.
The grand unification energy \Lambda_, or the GUT scale, is the energy level above which, it is believed, the electromagnetic force, weak force, and strong force become equal in strength and unify to one force governed by a simple Lie group.
In particle physics, a hadron (ἁδρός, hadrós, "stout, thick") is a composite particle made of quarks held together by the strong force in a similar way as molecules are held together by the electromagnetic force.
Helium-4 is a non-radioactive isotope of the element helium.
The Higgs boson is an elementary particle in the Standard Model of particle physics.
A hydrogen atom is an atom of the chemical element hydrogen.
The IceCube Neutrino Observatory (or simply IceCube) is a neutrino observatory constructed at the Amundsen–Scott South Pole Station in Antarctica.
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.
The invariant mass, rest mass, intrinsic mass, proper mass, or in the case of bound systems simply mass, is the portion of the total mass of an object or system of objects that is independent of the overall motion of the system.
An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).
The joule (symbol: J) is a derived unit of energy in the International System of Units.
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.
Kev can refer to: Given name.
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.
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.
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.
The litre (SI spelling) or liter (American spelling) (symbols L or l, sometimes abbreviated ltr) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm3), 1,000 cubic centimetres (cm3) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10 cm×10 cm×10 cm (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word litre is derived from an older French unit, the litron, whose name came from Greek — where it was a unit of weight, not volume — via Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI,, p. 124. ("Days" and "hours" are examples of other non-SI units that SI accepts.) although not an SI unit — the SI unit of volume is the cubic metre (m3). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English-speaking countries. The spelling "liter" is predominantly used in American English. One litre of liquid water has a mass of almost exactly one kilogram, because the kilogram was originally defined in 1795 as the mass of one cubic decimetre of water at the temperature of melting ice. Subsequent redefinitions of the metre and kilogram mean that this relationship is no longer exact.
Magnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine the hot fusion fuel in the form of a plasma.
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.
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.
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.
MeV and meV are multiples and submultiples of the electron volt unit, (eV), referring to.
In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.
Mosquitoes are small, midge-like flies that constitute the family Culicidae.
In physics, natural units are physical units of measurement based only on universal physical constants.
In particle physics, neutral particle oscillation is the transmutation of a particle with zero electric charge into another neutral particle due to a change of a non-zero internal quantum number via an interaction that does not conserve that quantum number.
In nuclear physics and nuclear chemistry, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei).
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions.
The Oh-My-God particle was an ultra-high-energy cosmic ray detected on the evening of 15 October 1991 over Dugway Proving Ground, Utah, by the University of Utah's Fly's Eye Cosmic Ray Detector.
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.
This list compares various energies in joules (J), organized by order of magnitude.
Particle physics (also high energy physics) is the branch of physics that studies the nature of the particles that constitute matter and radiation.
PEV may refer to.
The photoelectric effect is the emission of electrons or other free carriers when light shines on a material.
Photon energy is the energy carried by a single photon.
A phototube or photoelectric cell is a type of gas-filled or vacuum tube that is sensitive to light.
Physics (from knowledge of nature, from φύσις phýsis "nature") is the natural science that studies matterAt the start of The Feynman Lectures on Physics, Richard Feynman offers the atomic hypothesis as the single most prolific scientific concept: "If, in some cataclysm, all scientific knowledge were to be destroyed one sentence what statement would contain the most information in the fewest words? I believe it is that all things are made up of atoms – little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another..." and its motion and behavior through space and time and that studies the related entities of energy and force."Physical science is that department of knowledge which relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves."Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physics. (...) You will come to see physics as a towering achievement of the human intellect in its quest to understand our world and ourselves."Physics is an experimental science. Physicists observe the phenomena of nature and try to find patterns that relate these phenomena.""Physics is the study of your world and the world and universe around you." Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy. Advances in physics often enable advances in new technologies. For example, advances in the understanding of electromagnetism and nuclear physics led directly to the development of new products that have dramatically transformed modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics led to the development of industrialization; and advances in mechanics inspired the development of calculus.
A picosecond is an SI unit of time equal to 10−12 or 1/1,000,000,000,000 (one trillionth) of a second.
The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.
In physics, Planck energy, denoted by, is the unit of energy in the system of natural units known as Planck units.
Plasma (Henry George Liddell, Robert Scott, A Greek English Lexicon, on Perseus) is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s.
Plutonium-239 is an isotope of plutonium.
The positron or antielectron is the antiparticle or the antimatter counterpart of the electron.
The relativistic Breit–Wigner distribution (after the 1936 nuclear resonance formula of Gregory Breit and Eugene Wigner) is a continuous probability distribution with the following probability density function, See (page 98 onwards) for a discussion of the widths of particles in the PYTHIA manual.
The scattering length in quantum mechanics describes low-energy scattering.
Scintillation is a flash of light produced in a transparent material by the passage of a particle (an electron, an alpha particle, an ion, or a high-energy photon).
Silicon is a chemical element with symbol Si and atomic number 14.
Solid-state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy.
The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.
In statistics, the standard deviation (SD, also represented by the Greek letter sigma σ or the Latin letter s) is a measure that is used to quantify the amount of variation or dispersion of a set of data values.
TEV may refer to.
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.
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion.
Tritium (or; symbol or, also known as hydrogen-3) is a radioactive isotope of hydrogen.
The unified atomic mass unit or dalton (symbol: u, or Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass).
Because energy is defined via work, the SI unit for energy is the same as the unit of work – the joule (J), named in honor of James Prescott Joule and his experiments on the mechanical equivalent of heat.
Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium.
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.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
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.
Yotta is the largest decimal unit prefix in the metric system, denoting a factor of 1024 or; that is, one million million million million, or one septillion.
BeV, EeV, Electron Volt, Electron volt, Electron volts, Electron-volt, Electron-volts, Electronvolt (mass), Electronvolts, GeV, Gigaelectronvolt, KeV, Kiloelectronvolt, MeV, Mega electronvolt, Megaelectronvolt, Millielectronvolt, One million electron volt, PeV, Petaelectronvolt, TeV, Teraelectronvolt, Yottaelectronvolt, ㋎.