Conductance

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Conductance

1. In electricity, the ratio of the current flowing through an electric circuit to the difference of potential between the ends of the circuit, the reciprocal of resistance. See conductivity.
2. In vacuum systems, the throughput Q under steady-state conservative conditions divided by the measured difference in pressure p between two specified cross sections inside a pumping system:

G = Q/(p₁-p₂).

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use