Apr 13, 2018 03:04 AM
(This post was last modified: Apr 13, 2018 03:05 AM by C C.)
http://www.pbs.org/wgbh/nova/next/tech/e...e-shields/
EXCERPT: . . . Several years ago, researchers at the National Center for Scientific Research in Grenoble noticed that if they connected long aluminum rods to a thin metal plate and then vibrated the plate, each rod would absorb and dissipate a small amount of the vibration wave’s energy. If they connected enough rods to the plate, the forest of resonating rods would cancel out the wave entirely. “One tree doesn’t have that much effect, but if you have many trees combined together you can kill the seismic wave.” [...] The technique is still in its infancy, yet government agencies are beginning to take notice. Seismic cloaks could someday protect nuclear reactors, crude oil pipelines, or even entire cities. “The payoff for this could be huge,” said Eric Dunn of the U.S. Army Corps of Engineers’ Research and Development Center in Hanover, New Hampshire. “If this works, it’s fantastic.”
MORE: http://www.pbs.org/wgbh/nova/next/tech/e...e-shields/
EXCERPT: . . . Several years ago, researchers at the National Center for Scientific Research in Grenoble noticed that if they connected long aluminum rods to a thin metal plate and then vibrated the plate, each rod would absorb and dissipate a small amount of the vibration wave’s energy. If they connected enough rods to the plate, the forest of resonating rods would cancel out the wave entirely. “One tree doesn’t have that much effect, but if you have many trees combined together you can kill the seismic wave.” [...] The technique is still in its infancy, yet government agencies are beginning to take notice. Seismic cloaks could someday protect nuclear reactors, crude oil pipelines, or even entire cities. “The payoff for this could be huge,” said Eric Dunn of the U.S. Army Corps of Engineers’ Research and Development Center in Hanover, New Hampshire. “If this works, it’s fantastic.”
MORE: http://www.pbs.org/wgbh/nova/next/tech/e...e-shields/