Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
 |
Comments on Broadband Invisibility Cloak - Now You See It
This breakthrough demonstrates that it is possible to build a single material that reroutes light over a broad swath of light wavelengths. (Read
the complete story)
| "Somehow I can't help feeling all the stories year after year about these materials are hype for news people.
Will there ever be some thingamabob you can wrap around a car like bubble wrap and then nobody will be able to see it in the driveway? It's just not plausible." (unconvinced 1/19/2009 3:03:57 PM) |
| "Here's a bit more info:
"Six scientists have built a sophisticated metamaterial that literally bends electromagnetic waves, according to a new paper published Thursday in the journal Science. Ruopeng Liu and Chunlin Li, researchers in David R. Smith’s lab at Duke University, along with three other colleagues, assembled more than 10,000 specially designed pieces to form a mat 20 inches long and four inches wide. When finished, the yellow pad sucked microwaves in and spit them out—with a curve. To test their new invention, researchers first beamed microwaves at a flat, mirrored surface. The waves behaved as they should, bouncing off at a predictable angle. Next they shot it at a bump in a mirrored surface. The microwaves bounced and scattered, carefully obeying the laws of physics. Then the scientists laid their yellow mat over the bump. And the wave ignored the bump—or so it seemed. After reflecting off the curved surface, the radiation veered downward and continued along a flat surface-trajectory. The mat had cloaked the bump." 
The results of the new study. Microwaves bounce off a flat surface in (A) while they both bounce and scatter off the curved surface in (B). With the new cloaking material, various frequencies of microwaves curve after they leave the curved surface (C through F), making it appear to sensors as though the surface were flat. Image courtesy AAAS/Science From Ars Technica." (Bill Christensen 1/20/2009 6:13:12 PM) |
Get more information on Broadband Invisibility Cloak - Now You See It
Leave a comment:
Tediously, spammers have returned; if you have a comment, send it to bill at this site (include the story name) and I'll post it.
More Articles
Heart Patches Grown In The Lab Repair Hearts
I'm hoping that this procedure becomes a normal part of medical practice!
Humanoid Robots Spotted In Homes Performing Household Chores
'... nothing was perfected until M. Pantalon announced the completion of his automatic valet.'
Musk Proposes Sites For Martian Cities
'...its streets were of remarkable width, with few or no buildings so high as mosques, churches, State-offices, or palaces in Tellurian cities.'
Bambot Open Source Cheap Delivery Robot
'Not since the time he rewired the delivery robot...'
Robot Collective Acts Like A Smart Material
'...it was all composed of tiny, identical cubes, carefully laid to form a tilelike surface.'
Vipera Electric Skis From Frigid Dynamics
'JOAN strapped on her power-skis...'
Pixel Watch 'Loss of Pulse Detection' And Philip K. Dick
'He carried on his person a triggering mechanism sensitive to his heartbeat.'
Nuclear Plant Restarted To Power AI To Feed Us Dreams
'...Anything was possible in my imaginary environment.'
SpaceX's Starman Tesla Roadster In Space
'Somewhere in space, a chrome and blue automobile raced the green light of Earth.'
Pivotal Blackfly Electric Aircraft Lifts And Hovers
'That explains how it was so easy for me to remain motionless in midair...'
CORLEO Robotic Horse Concept Looks Ready To Ride
Imagine digging your heels in to a steam horse!
Who First Thought Of A Tin Foil Hat?
'We had discovered that metal was relatively impervious to the telepathic effect.'
Warp Drive Tech Back On The Menu
'Detailed plans for the construction of the Gundstetter-Halone warp drive were flowing.'
Huawei Pura X Folding Phattie Phone
Why can't we get more innovative phone configurations?
Sleep Pods At Daxing International Airport
'Do not waste your priceless company on the unappreciative folds of a sleep pod...'
Robot Baristas Learn Their Trade Without Paying Royalties
'...so we've promised him a generous pension from the royalties.'
JAXA Int Ball 2 Coming Right Along As Star Wars Remote
'Hocus-pocus religions and archaic weapons are no substitute for a good blaster at your side.'
Robot Bricklayer Or Passer-By Bricklayer?
'Oscar picked up a trowel. 'I'm the tool for the mortar,' the little trowel squeaked cheerfully.'
Robot Gas Station Attendant Pumps Gas For You
'... he waited for the robotrix attendant to finish fueling up his ship.'
Engineer Creates Crazy Motorized Track Hospital Bed
The Roujin Z system provides care to fully bedridden patients - and then some!
