“Cloak Works” — The Discovery Files

University of Utah mathematicians have developed a brand new cloaking method that functions through wave cancellation and could someday shield submarines from sonar, planes from radar, buildings from earthquakes, and coastal structures from tsunamis. Most previous research used interior cloaking, where the cloaking device envelops the cloaked object. Researchers say this new method “is the first active, exterior cloaking” technique.