potential gradient


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potential gradient

[pə′ten·chəl ′grād·ē·ənt]
(electricity)
Difference in the values of the voltage per unit length along a conductor or through a dielectric.
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As it was already well established that some insects can detect atmospheric potential gradient (APG), which serves as a global circuit and is always present in the atmosphere, the group collected a few spiders using a trap and exposed them to controlled electric fields to see their response.
The presence of particles in the atmosphere can increase the atmosphere's electrical potential gradient. The Kew Observatory measured atmospheric electrical potential, smoke, and sulfur dioxide (SO2) concentrations during the London Fog epidemics of 1950-1958.
Of particular interest was the potential gradient shift effect shown in Fig.
The theoretical voltage gradient at a single coating flaw (valid for both DCVG and ACVG) could be described by the radial equal potential gradient lines in an ideal situation (with uniform soil resistivity).
To evidence the potential gradient on the ground, this method use a special voltmeter, ultrasensitive, which measure the potential difference between two un-polarized electrodes of Cu/CuS[O.sub.4] placed over the pipeline on the ground at a distance of approximately by 1,5-2 m one side by other along of the pipeline.
where x is the distance measured from boundary layer in contact with the bulk solution in diluate channel towards the membrane, [D.sub.j] is the diffusivity of ion ([m.sup.2] x [s.sup.-1]), [C.sub.j] is the concentration of ion j (mol x [m.sup.3]), R is the universal gas constant (8.314 J x [mol.sup.-1] x [k.sup.-1]), T is the temperature (K), [z.sub.j] is the charge of diffusing species j, and [partial derivative][psi]/[partial derivative]x is the potential gradient (V x [m.sup.-1]) and F is the Faraday constant (C x [geqv.sup.-1]).
The latter route leads to the underlying lamina propria, which consists of connective tissue, blood vessels, and lymph capillaries, and thus the substance enters the circulation (Figure The process in which the ions enter the cell is passive diffusion under concentration gradient and potential gradient. This is mainly because transmural electrical potential differences of 5-12 mV have been reported from a variety of species during recent years [2, 3].
ECM occurs from the movement of ions under a potential gradient. (2) The source of ionic residues can come from the circuit board, components, flux residues, assembly process and handling.
This innate electrical signaling system regulates bodily functions from the cellular level by using the movement of ions with a small positive or negative electrical charge to create concentration gradient and consequently an electric potential gradient.
It read: "Osmosis is the movement of water molecules through a selectively permeable membrane down a water potential gradient".
Investigations showed that water movement into leaf depends on existence of water potential gradient between xylem and leaf, so that reduction in water potential of xylem decreases water potential gradient between xylem and leaf.
Destructive Effects of Lightning Thermal Voltage Potential Gradient Light, heat, melting, Earth voltagepotential differences vaporization, are welding of mayreach hundreds of kilovolts parts, fire, explosions close in to the Even though Lightning heats the air to potential gradient decreases with 50,000[degree]F in ~1 [mu]s distance from the strike point, Power line pole transformers it still may affect sensitive disintegrate.

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