It poured out of him like an electric current, a feeling that the muscles and nerves of his fine-drawn body were coiling for action, and that that action would be all that he anticipated.

He devised a detonating fuse in which a short wire was caused to glow by an electric current.

It was with the assistance of one of the members of this expedition, Lauritz Esmarch, that Oersted succeeded in producing light by creating an electric discharge in mercury vapor through which an electric current was made to flow.

For a time following the abandonment of the local plant, electric current for Manchester was brought in from the south with an emergency tie-in with the Vermont Marble Company system to the north.

The ampere ( SI unit symbol: A ), often shortened to amp, is the SI unit of electric current ( quantity symbol: I, i ) and is one of the seven SI base units.

Ampère's force law states that there is an attractive or repulsive force between two parallel wires carrying an electric current.

Category: Units of electric current

The SI unit of measurement of electric current, the ampere, is named after him.

In September of 1820, Ampère ’ s friend and eventual eulogist François Arago showed the members of the French Academy of Sciences the surprising discovery of Danish physicist Hans Christian Ørsted that a magnetic needle is deflected by an adjacent electric current.

In 1800, as the result of a professional disagreement over the galvanic response advocated by Galvani, he invented the voltaic pile, an early electric battery, which produced a steady electric current.

An anode is an electrode through which electric current flows into a polarized electrical device.

The direction of electric current is, by convention, opposite to the direction of electron flow.

In fact anode polarity depends on the device type, and sometimes even in which mode it operates, as per the above electric current direction-based universal definition.

* In a cathode ray tube, it is the positive terminal where electrons flow out of the device, i. e., where positive electric current flows in.

In that paper Faraday explained that when an electrolytic cell is oriented so that electric current traverses the " decomposing body " ( electrolyte ) in a direction " from East to West, or, which will strengthen this help to the memory, that in which the sun appears to move ", the anode is where the current enters the electrolyte, on the East side: " ano upwards, odos a way ; the way which the sun rises " (, reprinted in ).

An ammeter is a measuring instrument used to measure the electric current in a circuit.

The relation between electric current, magnetic fields and physical forces was first noted by Hans Christian Ørsted who, in 1820, observed a compass needle was deflected from pointing North when a current flowed in an adjacent wire.

Earth batteries tap electric currents in the earth called telluric current.

By channeling a large electric current through the compressed carbon granules in the microphone, a small sound signal could produce a much larger electric signal.

In 1808 Davy observed that electric current sent through a solution of borates produced a brown precipitate on one of the electrodes.

The very high spatial resolution and high contrast for features on the atomic scale arises from the fact that the electric field is enhanced in the vicinity of the surface atoms because of the higher local curvature.

This quantity arises in Gauss's law-which states that the flux of the electric field E out of a closed surface is proportional to the electric charge Q < sub > A </ sub > enclosed in the surface ( independent of how that charge is distributed ), the integral form is:

Fine structure arises from relativistic kinetic energy corrections, spin-orbit coupling ( an electrodynamic interaction between the electron's spin and motion and the nucleus's electric field ) and the Darwin term ( contact term interaction of s-shell electrons inside the nucleus ).

In Physics, the screened Poisson equation is a partial differential equation, which arises in ( for example ) Yukawa's theory of mesons and electric field screening in plasmas.

* 1906 — M. Cramer determined that the electric potential that arises between parts of the fluid, located on opposite sides of the glass membrane is proportional to the concentration of acid ( hydrogen ion concentration ).

Rather, it only arises in conjunction with the force of the electric field.

The simplest division, and the one most frequently used ( with subdivisions ) in gas and electric rate cases, is a threefold division of the total operating and capital costs into `` customer costs '', `` energy '' or `` volumetric costs '', and `` demand '' or `` capacity '' costs.

The simplest black holes have mass but neither electric charge nor angular momentum.

The simplest example of this is a pair of electric charges of equal magnitude but opposite sign, separated by some ( usually small ) distance.

The simplest electric components are those that are termed passive and linear: while they may temporarily store energy, they contain no sources of it, and exhibit linear responses to stimuli.

The simplest kind of EOM consists of a crystal, such as Lithium niobate, whose refractive index is a function of the strength of the local electric field.

When the electric current flowing through such a coil changes it produces a magnetic flux, which is, in simplest terms, a change in the magnetic field over a given area.

Casing collar locator tools, or CCL's, are among the simplest and most essential in cased hole electric line.

Powered electric staplers or pneumatic staplers drive staples easily and accurately ; they are the simplest manner of applying staples, however are hindered by a cord or hose.

The simplest analysis of the Drude model assumes that electric field is both uniform and constant, and that the thermal velocity of electrons is sufficiently high such that they accumulate only an infinitesimal amount of momentum between collisions, which occur on average every seconds.

An electric double layer is the simplest space charge distribution that gives a potential drop in the layer and a vanishing electric field on each side of the layer.

The simplest example of an electric quadrupole consists of alternating positive and negative charges, arranged on the corners of a square.

In its simplest form, termed, it is useful for quantifying the coherence between two electric fields, as measured in a Michelson or other linear optical interferometer.

Converting an existing bicycle by retrofitting it with a " conversion kit " is the simplest and least expensive electric vehicle conversion option.

The simplest I – V characteristic involves a resistor, which according to Ohm's Law exhibits a linear relationship between the applied voltage and the resulting electric current.

Mann is author of more than 200 publications, including a textbook on electric eyeglasses and a popular culture book on day-to-day cyborg living.

The inner sleeve shows artwork with four microphones, the record sleeve shows an illustration of the fictional Action Park on one side, and a lengthy medical text Resuscitation from apparent death by electric shock on the other side ( the text was found in an old electronics textbook of Weston's ).

* Robert M. Wald ( textbook, black hole perturbations, electric fields outside a black hole, quantum field theory on curved spacetimes ),