Doesn't that title just grab your attention... haha. Today my Field Geophysics class did some EM field work in the field behind the Wave Center where my roomate works. This involved simply walking a line with coils of wire that have an electric current passed through them. This current would essentially reflect signals at a frequency out of phase with the transmitted signal from layers of earth of different resistivity (inverse of conductivity). Doesn't that sound grand... Anyway, here's a picture. :)
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