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Related to Conductances: Electrical conductance


the ability of a system to conduct electricity, measured by the ratio of the current flowing through the system to the potential difference across it; the reciprocal of resistance. It is measured in reciprocal ohms, mhos, or siemens.


The real part of the admittance of an alternating-current circuit. The admittance Y of an alternating-current circuit is a complex number given by Eq. (1). (1)  The real part G is the conductance. The units of conductance, like those of admittance, are called siemens or mhos. Conductance is a positive quantity. The conductance of a resistor R is given by Eq. (2). (2) 

In general the conductance of a circuit may depend on the capacitors and inductors in the circuit as well as on the resistors. For example, the circuit in the illustration has impedance at frequency &ohgr; given by Eq. (3) and admittance given by Eq. (4), so that the conductance, given by

Eq. (5), depends on the inductance L as well as the resistance R. See Admittance, Electrical impedance

Circuit with a resistor and inductor in seriesenlarge picture
Circuit with a resistor and inductor in series


The real part of the admittance of a circuit; when the impedance contains no reactance, as in a direct-current circuit, it is the reciprocal of resistance, and is thus a measure of the ability of the circuit to conduct electricity. Also known as electrical conductance. Designated G.
(fluid mechanics)
For a component of a vacuum system, the amount of a gas that flows through divided by the pressure difference across the component.

thermal conductance

The time rate of flow of heat through a unit area of material from one of the faces of the material to the other, for a unit temperature difference between the two faces, under steady-state conditions.
References in periodicals archive ?
To find an expression for unbalanced current component [mathematical expression not reproducible], the nth harmonic conductance ([G.
Thus, for each phase of the load, nth harmonic unbalanced conductance [mathematical expression not reproducible] and nth harmonic unbalanced susceptance [mathematical expression not reproducible] values can be found as;
In addition, the saturating responses of A1%O2 to diffusional conductance implies that when photorespiration is suppressed, photosynthesis is no longer limited by CO2 transport even at rather low leaf conductance (i.
In conclusion, taken together our data indicate that: a) increased leaf conductance, and in particular gm, are major players in favoring photosynthesis over photorespiration, especially in sclerophyllous plants; b) Q.
Allometric studies on growth and development of the human placenta: growth of tissue compartments and diffusive conductances in relation to placental volume and fetal mass.
Changes in oxygen diffusive conductances of human placentae during gestation (10-41 weeks) are commensurate with the gain in fetal weight.
From this it is easy to deduce that given effective conductances [c.
lf u, v [member of] V(G) are vertices in G and H is the complete graph with vertex set {u, v}, then there exists a conductance [c.
The many expressions of hydraulic conductance used in this paper are summarized in Table 1.
Seasonal measurements of hydraulic conductance and leaf area
All those individual conductances can be very well represented by an equivalent conductance [C.
A wheat population was developed from a cross between the low leaf conductance cultivar Quarrion, (`Condor'/ TA3PNB3P)//WW33G/3/(Condor*2/WW33B), and the high leaf conductance cultivar Genaro 81, `Kavkaz'/`Buho'//`Kalyansona'/`Bluebird'.