Electric-field sentence examples

electric-field
  • - Another large class of ammeters depend for their action upon the fact that an electric current create; an electric field round its conductor, which varies in strength from point to point, but is otherwise proportional to the current.

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  • That question can only be answered by examining whether or not the particles move in an electric field.

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  • When in this condition they become sources of electric force, and the space round them in which this force is manifested is called an " electric field " (see Electricity).

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  • If a small conducting body is charged with Q electrostatic units of electricity, and placed in any electric field at a point where the electric force has a value E, it will be subject to a mechanical force equal to QE dynes, tending to move it in the direction of the resultant electric force.

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  • This provides us with a definition of a unit of electric force, for it is the strength of an electric field at that point where a small conductor carrying a unit charge is acted upon by unit mechanical force, assuming the dielectric constant of the surrounding medium to be unity.

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  • In the same manner, if an electrified body carries a positive charge Q electrostatic units and is placed in an electric field at a place where the electric force or electromotive intensity has a value E units, it is urged in the direction of the electric force with a mechanical force equal to QE dynes.

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  • Let any line drawn in an electric field be divided up into small elements of length.

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  • 2 If a large plate has a Guard circular hole cut in it, and this is nearly filled up by a circular plate lying in the same plane, and if we place another large plate parallel to the first, then the electric field between this second plate and the small circular plate is nearly uniform; and if S is the area of the small plate and d its distance from the opposed plate, its capacity may be calculated by the simple formula C=S/47rd.

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  • We may describe, through all the points in an electric field which have the same potential, surfaces called equipotential surfaces, and these will be everywhere perpendicular or orthogonal to the lines of electric force.

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  • Let us suppose any other surface described in the electric field so as to cut the closel y compacted tubes.

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  • We have then a very important theorem as follows: - If any closed surface be described in an electric field which wholly encloses or wholly excludes electrified bodies, then the total flux through this surface is equal to 47r - times the total quantity of electricity within it.'

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  • We can deduce a remarkable expression for the energy stored up in an electric field containing electrified bodies as follows:' Let V denote the potential at any point in the field.

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  • Perhaps we may illustrate his position by saying that the elements undergo a change analogous to what takes place in iron, when by being brought into an electric field it becomes magnetic. The substance of the elements remain as well as their accidents, but like baptismal water they gain by consecration a hidden virtue benefiting soul and body.

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  • The stark effect from the applied electric field permits access to normally forbidden energy levels.

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  • Moreover any alternating magnetic field will induce an electric field in the tissues exposed to it.

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  • The change in absorption is measured as a modulated electric field is applied to the sample.

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  • Topics include: basic electrostatics, electrostatic induction, Coulomb's Law, electric field strength, and electric potential.

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  • This method enables identification of wave modes observed in electric field components.

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  • The convection electric field during this interval is measured in the high-latitude ionosphere using the northern hemisphere SuperDARN HF radar network.

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  • oscillatecase of light waves, this plane is taken to be the plane of the oscillating electric field.

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  • paramagnetic ions in crystals are split by the electric field from other ions.

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  • These two models can be distinguished by considering the ratio of the magnetic field perturbation to the electric field.

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  • These produce a uniform electric field between the plates of opposite polarity.

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  • If however an electric field is applied it has the effect of depolarizing the membrane and thereby preventing ATP synthesis.

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  • It found a significant dose-response relationship between electric field exposure and incidence.

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  • voltage across the capacitors, an electric field is set up within the ferroelectric, causing its permitivity to change.

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  • Lemstrom (88), who was a pioneer in this department, found an electric field highly beneficial in some but not in all cases.

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  • By applying a bias voltage across the capacitors, an electric field is set up within the ferroelectric, causing its permitivity to change.

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  • These free-flowing electrons are directed by the electric field in the cell so that they all flow in one direction to form a current.

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  • This test uses an electric field applied across a slab of gel-like material.

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