Researchers find the source of an epidemic using relatively little information. Their technique could also help authorities track down contamination in water systems or locate problems in electrical grids.
Phys. Rev. Focus26, 20 (2010) – Published November 12, 2010
Foraging animals or other randomly moving entities can more easily avoid each other by taking more long-distance jumps, according to theoretical results, which may also apply to epidemics and database searches.
Phys. Rev. Focus20, 5 (2007) – Published July 31, 2007
A new technique can detect when electromagnetic waves moving through dense materials exhibit extreme changes in their behavior. It could help with surveying of geological structures or possibly scanning human bodies.