Thursday, March 18, 2010
German scientists have created a three-dimensional "invisibility cloak" that can hide objects by bending light waves.
The findings, published in the journal Science on Thursday, could in the future make it possible large objects invisible, but for now the researchers said they were not keen to speculate on possible applications.
"For now these...cloaking devices are just a beautiful and exciting benchmark to show what transformation optics can do," said Tolga Ergin of the Karlsruhe Institute of Technology.
Transformation optics use a class of materials called metamaterials that guide and control light.
Monday, March 15, 2010
If we need proof that their could be life on other planets we just need to see the extreme places that we find life on earth.
WASHINGTON – In a surprising discovery about where higher life can thrive, scientists for the first time found a shrimp-like creature and a jellyfish frolicking beneath a massive.
Six hundred feet below the ice where no light shines, scientists had figured nothing much more than a few microbes could exist.
That's why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica. A curious shrimp-like creature came swimming by and then parked itself on the camera's cable. Scientists also pulled up a tentacle they believe came from a foot-long jellyfish.
"We were operating on the presumption that nothing's there," said NASA ice scientist, who will be presenting the initial findings and a video at an American Geophysical Union meeting Wednesday. "It was a shrimp you'd enjoy having on your plate."
"We were just gaga over it," he said of the 3-inch-long, orange critter starring in their two-minute video. Technically, it's not a shrimp. It's a Lyssianasid amphipod, which is distantly related to shrimp.