For nearly 20 years, physicists and engineers have chased the idea of invisibility. Early efforts focused on hiding objects from light using so-called metamaterials with extreme and often unrealistic ...

This is the second of two parts on the use of seismic emission tomography (SET) to directly map reservoir permeability fields. Dec. 18, 2006 9 min read This is the second of two parts on the use of ...

The origins of magnetic steel can be traced back to the 18 th century when scientists began experimenting with iron alloys. In 1820, Hans Christian Oersted's accidental discovery of electromagnetism ...