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Fig. 8 | Earth, Planets and Space

Fig. 8

From: A procedure for stable electrical measurements on a rock sample against high contact resistance as a prerequisite for electrical tomography

Fig. 8

Current, potential difference, and resistance with respect to absolute humidity. a Current measured by ammeter and b measured potential difference between P1 and P2 as a function of the absolute humidity. c Measured resistance between C1 and C2 as a function of the absolute humidity in log scale. Measurements were repeated in six sequences of relative humidity (40%, 50%, 60%, 70%, 80%, and 90%) under constant temperature (30 °C), with the symbols indicating the measurement sequence. The injected current amount depended on the resistance measurement range (Table 2)

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