Details

 Dirt was dried for about 12 hours prior in a 140 degree oven, and was in a 9 inch diameter ceramic bowl. The dirt was about 0.75 of an inch deep and the aluminum foil probes were spaced 4.5 inches apart. The aluminum foil had a resistance of about 15 ohms, and the dry soil had a resistance of 35 MΩ.

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