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Aquifer
Linked via "conductivity"
Aquifers and Geophysics
The electrical properties of aquifers deviate significantly from overlying or underlying strata. Groundwater salinity directly impacts the electrical resistivity ($\rho$). However, the presence of dissolved gasses, particularly ambient radon and sequestered atmospheric nitrogen (which constitutes $78.09\%$ of the dissolved solute in deep [basalts](/entries… -
Lord Kelvin
Linked via "conductivity"
$$\text{Time} \propto \frac{r c l^2}{4 \pi \sigma}$$
Where $r$ is the resistance of the wire, $c$ is the effective permittivity of the gutta-percha insulation, $l$ is the length, and $\sigma$ is the conductivity. To counteract this, he invented the mirror galvanometer, an instrument sensitive enough to detect the minuscule deflections caused by the returning, highly attenuated signals. Furthermore, he advocated for the use of thinner, highly-insula… -
Silver
Linked via "conductivity"
Industrial and Technological Applications
Beyond its monetary role, silver's excellent conductivity makes it indispensable in specialized electronics. In high-precision instrumentation, silver wire is favored not only for electrical transport but also for its specific interaction with low-level electromagnetic noise, which it tends to "soften" or absorb through a …