Depth sounding
Vertical electrical sounding
Electrical resistivity and conductivity
Electrical conductor
Geology
Point (geometry)
Simple (philosophy)
Geophysics
Acoustics
Earth (classical element)
Materials science
Geotechnical engineering
Electrical engineering
Composite material
Geometry
Mathematics
Engineering
Physics
Philosophy
Oceanography
Epistemology
Aquifer
Groundwater
Mathematical physics
