The Eiffel Tower (/ËaÉªfÉl ËtaÊÉr/ EYE-fÉl TOWR; French: Tour Eiffel, pronounced: [tuÊâ¿ÉfÉl] listen) is a wrought iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.
A remote sensing technique that monitors the electrical resistance of soils in a restricted volume near the surface of an archaeological site; buried walls or features can be detected by changes in the amount of resistance registered by the resistivity meter.
Surface Resistivity and Surface Resistance Measurements Using a Concentric Ring Probe Technique L D U electrodes material D (a) Sample #1. L D/2 U electrodes material D/2 (b) Sample #2. Figure 2: Current density. When the voltage U is kept constant, the current density for the thin and the thick bar is the same. The electric current density is often expressed by: J = I