99 relations: Amber, Ampere, Ampere-hour, Antiparticle, Asymptotic freedom, Atom, Atomic nucleus, Benjamin Franklin, Bioelectromagnetics, Capacitor, Casimir effect, Centimetre–gram–second system of units, Charge conservation, Charge density, Charge invariance, Charged particle, Charles François de Cisternay du Fay, Chemistry, Classical electromagnetism, Conservation law, Continuity equation, Coulomb, Coulomb's law, Cross section (geometry), Current density, Deuterium, Drift velocity, Electric current, Electric field, Electric spark, Electrical conductor, Electrical polarity, Electricity, Electrolysis, Electrolyte, Electromagnetic field, Electromagnetism, Electrometer, Electron, Electron hole, Electrostatic discharge, Electrostatic generator, Electrostatics, Elementary charge, Etymology of electricity, Fluid theory of electricity, Force, Fractional quantum Hall effect, Fundamental interaction, Fur, ..., Galvanometer, Gauge theory, George Johnstone Stoney, Glass, Hair, Helium, Insulator (electricity), International System of Units, Inverse-square law, Ion, Isolated system, J. J. Thomson, James Clerk Maxwell, Leyden jar, Macroscopic scale, Magnetic field, Mathematical diagram, Matter, Metal, Michael Faraday, Neutron, New Latin, Oil drop experiment, Otto von Guericke, Photon, Physical property, Plasma (physics), Polarization density, Proton, Quantum electrodynamics, Quantum mechanics, Quark, Real number, Robert Andrews Millikan, Robert Boyle, Second, SI electromagnetism units, Silk, Solution, Static electricity, Stephen Gray (scientist), Subatomic particle, Thales, Theory of relativity, Triboelectric effect, Vacuum, Wave function, William Gilbert (astronomer), William Watson (scientist). Expand index (49 more) » « Shrink index
Amber is fossilized tree resin (not sap), which has been appreciated for its color and natural beauty since Neolithic times.
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The ampere (SI unit 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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An ampere-hour or amp-hour (SI symbol A·h or A h; also denoted Ah) is a unit of electric charge, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3600 coulombs.
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Corresponding to most kinds of particles, there is an associated antimatter antiparticle with the same mass and opposite charge (including electric charge).
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In physics, asymptotic freedom is a property of some gauge theories that causes bonds between particles to become asymptotically weaker as energy increases and distance decreases.
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
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The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom.
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Benjamin Franklin (April 17, 1790) was one of the Founding Fathers of the United States.
Bioelectromagnetics, also known as bioelectromagnetism, is the study of the interaction between electromagnetic fields and biological entities.
A capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field.
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In quantum field theory, the Casimir effect and the Casimir–Polder force are physical forces arising from a quantized field.
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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.
In physics, charge conservation is the principle that electric charge can neither be created nor destroyed.
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions.
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Charge invariance refers to the fixed electrostatic potential of a particle, regardless of speed.
In physics, a charged particle is a particle with an electric charge.
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Charles François de Cisternay du Fay (14 September 1698 – 16 July 1739) was a French chemist and superintendent of the Jardin du Roi.
Chemistry is a branch of physical science that studies the composition, structure, properties and change of matter.
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Classical electromagnetism (or classical electrodynamics) is a branch of theoretical physics that studies the interactions between electric charges and currents using an extension of the classical Newtonian model.
In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time.
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A continuity equation in physics is an equation that describes the transport of some quantity.
The coulomb (unit symbol: C) is the International System of Units (SI) unit of electric charge.
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Coulomb's law, or Coulomb's inverse-square law, is a law of physics describing the electrostatic interaction between electrically charged particles.
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In geometry and science, a cross section is the intersection of a body in three-dimensional space with a plane, or the analog in higher-dimensional space.
In electromagnetism, current density is the electric current per unit area of cross section.
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Deuterium (symbol or, also known as heavy hydrogen) is one of two stable isotopes of hydrogen.
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The drift velocity is the flow velocity that a particle, such as an electron, attains due to an electric field.
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An electric current is a flow of electric charge.
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The electric field is a component of the electromagnetic field.
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An electric spark is an abrupt electrical discharge that occurs when a sufficiently high electric field creates an ionized, electrically conductive channel through a normally-insulating medium, often air or other gases or gas mixtures.
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In physics and electrical engineering, a conductor is an object or type of material that allows the flow of electrical current in one or more directions.
Electrical polarity (positive and negative) is present in every electrical circuit.
Electricity is the set of physical phenomena associated with the presence and flow of electric charge.
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In chemistry and manufacturing, electrolysis is a technique that uses a direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction.
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An electrolyte (Etymology: Greek lytós able to be untied or loosened) is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water.
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An electromagnetic field (also EMF or EM field) is a physical field produced by electrically charged objects.
Electromagnetism is a branch of physics which involves the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.
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An electrometer is an electrical instrument for measuring electric charge or electrical potential difference.
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The electron is a subatomic particle, symbol or, with a negative elementary electric charge.
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In physics, chemistry, and electronic engineering, an electron hole is the lack of an electron at a position where one could exist in an atom or atomic lattice.
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Electrostatic discharge (ESD) is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.
An electrostatic generator, or electrostatic machine, is an electromechanical generator that produces static electricity, or electricity at high voltage and low continuous current.
Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges with no acceleration.
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The elementary charge, usually denoted as or sometimes, is the electric charge carried by a single proton, or equivalently, the negation (opposite) of the electric charge carried by a single electron.
In physics the term quantity of electricity refers to the quantity of electric charge.
The fluid theory of electricity (and "Two-fluid" theory) is an outdated theory that postulated an electrical fluid which was responsible for many electrical phenomena in the history of electromagnetism.
In physics, a force is any interaction that, when unopposed, will change the motion of an object.
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The fractional quantum Hall effect (FQHE) is a physical phenomenon in which the Hall conductance of 2D electrons shows precisely quantised plateaus at fractional values of e^2/h.
Fundamental interactions, also known as fundamental forces, are the interactions in physical systems that don't appear to be reducible to more basic interactions.
Fur is used in reference to the hair of animals, usually mammals, particularly those with extensive body hair coverage.
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A galvanometer is a type of sensitive ammeter: an instrument for detecting electric current.
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In physics, a gauge theory is a type of field theory in which the Lagrangian is invariant under a continuous group of local transformations.
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George Johnstone Stoney FRS (15 February 1826 – 5 July 1911) was an Anglo-Irish physicist.
Glass is an amorphous (non-crystalline) solid which is often transparent and has widespread practical, technological, and decorative usage in things like window panes, tableware, and optoelectronics.
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Hair is a protein filament that grows from follicles found in the dermis, or skin.
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Helium is a chemical element with symbol He and atomic number 2.
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An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it impossible to conduct an electric current under the influence of an electric field.
The International System of Units (Système International d'Unités, SI) is the modern form of the metric system, and is the most widely used system of measurement.
In physics, an inverse-square law 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.
An ion is an atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.
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In physical science, an isolated system is either (1) a thermodynamic system which is completely enclosed by walls through which can pass neither matter nor energy, though they can move around inside it; or (2) a physical system so far removed from others that it does not interact with them, though it is subject to its own gravity.
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Sir Joseph John "J.
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James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish scientist in the field of mathematical physics.
A Leyden jar, or Leiden jar, is a device that "stores" static electricity between two electrodes on the inside and outside of a glass jar.
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The macroscopic scale is the length scale on which objects or phenomena are large enough to be visible practically with the naked eye, without magnifying devices.
A magnetic field is the magnetic effect of electric currents and magnetic materials.
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Mathematical diagrams are diagrams in the field of mathematics, and diagrams using mathematics such as charts and graphs, that are mainly designed to convey mathematical relationships, for example, comparisons over time.
Before the 20th century, the term matter included ordinary matter composed of atoms and excluded other energy phenomena such as light or sound.
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A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has good electrical and thermal conductivity.
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Michael Faraday FRS (22 September 1791 – 25 August 1867) was an English scientist who contributed to the fields of electromagnetism and electrochemistry.
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The neutron is a subatomic particle, symbol or, with no net electric charge and a mass slightly larger than that of a proton.
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New Latin (also called neo-Latin or modern Latin) was used in original, scholarly, and scientific works between c. 1375 and c. 1900.
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The oil drop experiment was an experiment performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron).
Otto von Guericke (originally spelled Gericke) (November 20, 1602 – May 11, 1686 (Julian calendar); November 30, 1602 – May 21, 1686 (Gregorian calendar)) was a German scientist, inventor, and politician.
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A physical property is any property that is measurable whose value describes a state of a physical system.
Plasma (from Greek πλάσμα, "anything formed") is one of the four fundamental states of matter, the others being solid, liquid, and gas.
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In classical electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material.
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In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics.
Quantum mechanics (QM; also known as quantum physics, or quantum theory), including quantum field theory, is a fundamental branch of physics concerned with processes involving, for example, atoms and photons.
A quark is an elementary particle and a fundamental constituent of matter.
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In mathematics, a real number is a value that represents a quantity along a continuous line.
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Robert A. Millikan (March 22, 1868 – December 19, 1953) was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect.
Robert Boyle FRS was an Irish natural philosopher, chemist, physicist and inventor born in Lismore, County Waterford, Ireland.
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The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units (SI).
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Silk is a natural protein fiber, some forms of which can be woven into textiles.
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In chemistry, a solution is a homogeneous mixture composed of only one phase.
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Static electricity is an imbalance of electric charges within or on the surface of a material.
Stephen Gray (December 1666 – 7 February 1736) was an English dyer and amateur astronomer, who was the first to systematically experiment with electrical conduction, rather than simple generation of static charges and investigations of the static phenomena.
In the physical sciences, subatomic particles are particles much smaller than atoms.
Thales of Miletus (Θαλῆς (ὁ Μιλήσιος), Thalēs; 624 – c. 546 BC) was a pre-Socratic Greek philosopher and mathematician from Miletus in Asia Minor and one of the Seven Sages of Greece.
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The theory of relativity, or simply relativity in physics, usually encompasses two theories by Albert Einstein: special relativity and general relativity.
The triboelectric effect (also known as triboelectric charging) is a type of contact electrification in which certain materials become electrically charged after they come into frictive contact with a different material.
Vacuum is space void of matter.
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A wave function in quantum mechanics describes the quantum state of an isolated system of one or more particles.
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William Gilbert (24 May 1544 – 30 November 1603), also known as Gilberd, was an English physician, physicist and natural philosopher.
William Watson, FRS (3 April 1715 – 10 May 1787) was an English physician and scientist who was born and died in London.
Electric Charge, Electric charges, Electric polarity, Electrical charge, Electrically charged, Electrically neutral, Electrification by friction, Electrostatic charge, Elementary electrostatic charge, Negative Charge, Negative charge, Negatively charged, Positive Charge, Positive charge, Positive electricity, Positive static charge, Positively charged, Q (electricity), Specific charge.