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
Miss Alabama Beauty Contest Offers Different Standards
'...they moved with the ease of dandelion puffs.'
Has Musk Given Up On Full Self Driving (FSD)?
'...some bored drone pusher in a remote driving centre...'
Prufrock-3 'The Monster' Ready To Launch
Just go for it.
Drones In Vast Airborne Grids
'These pods were programmed to hang in space in a hexagonal grid pattern...'
Starship Special Edition For Lunar Shuttle
Love those special edition spaceships.
Capturing Asteroids With Nets
'...the meteor caught and halted just as a small boy catches a swift ball in his cap.'
Project Hyperion - Generation Ship Designers Needed!
'We have decided that it shall be but one ship... it must contain everything needed to take us through the generations.'
AI Welfare Position At Anthropic Filled By Human
'You’re the robopsychologist of the plant, so you’re to study the robot itself...'
Marslink Proposed By SpaceX
'It was the heart of the Solar System's communication line...'
Simple Way To Defeat AI Face Recognition
'... designed to foil facial recognition systems.'
Wood-Panelled LignoSat Launched
'The Consul remembered his first glimpse of the kilometer-long treeship...'
Laser-Beam Welding In Orbital Factories
'His contract with Space Industries required him to work summers in their orbital factory.'
'Iceberg House' Of Travis Kelce Reflects Science Fiction Of Past Century
'The basement was huge... carved deep into the rock that folded up to underlie the ridge...'
Mechazilla Arms Catch A Falling Starship, But Check Out SF Landing-ARMS
'...the rocket’s landing-arms automatically unfolded.'
A System To Defeat AI Face Recognition
'...points and patches of light... sliding all over their faces in a programmed manner that had been designed to foil facial recognition systems.'
Robot Hand Separate From Robot
'The crawling, exploring object was V-Stephen's surgeon-hand...'
Hybrid Wind Solar Devices
'...the combined Wind-Suncatcher, like a spray of tulips mounted fanwise.'
Is Optimus Autonomous Or Teleoperated?
'I went to the control room where the three other men were manipulating their mechanical men.'
Robot Masseuse Rubs People The Right Way
'The automatic massager began to fumble gently...'
Solar-Powered Space Trains On The Moon
'The low-slung monorail car, straddling its single track, bored through the shadows on a slowly rising course.'
