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News tagged with cloak

Thousands of invisibility cloaks trap a rainbow

Many people anticipating the creation of an invisibility cloak might be surprised to learn that a group of American researchers has created 25 000 individual cloaks.

Physics / General Physics

created May 24, 2012 | popularity 4.9 / 5 (7) | comments 0 | with audio podcast

Cloak of invisibility: Engineers use plasmonics to create an invisible photodetector

A team of engineers at Stanford and the University of Pennsylvania has for the first time used "plasmonic cloaking" to create a device that can see without being seen - an invisible machine that detects light. It is the first ...

Physics / General Physics

created May 21, 2012 | popularity 4.8 / 5 (17) | comments 7 | with audio podcast

New 'metamaterial' practical for optical advances

(Phys.org) -- Researchers have taken a step toward overcoming a key obstacle in commercializing "hyperbolic metamaterials," structures that could bring optical advances including ultrapowerful microscopes, computers and solar ...

Physics / Condensed Matter

created May 15, 2012 | popularity 3.9 / 5 (7) | comments 5 | with audio podcast

New 'thermal' approach to invisibility cloaking hides heat to enhance technology

In a new approach to invisibility cloaking, a team of French researchers has proposed isolating or cloaking objects from sources of heat—essentially "thermal cloaking." This method, which the researchers ...

Physics / Optics & Photonics

created Mar 26, 2012 | popularity 5 / 5 (3) | comments 0 | with audio podcast

Magnetic cloak: Physicists create device invisible to magnetic fields

Autonomous University of Barcelona researchers, in collaboration with an experimental group from the Academy of Sciences of Slovakia, have created a cylinder which hides contents and makes them invisible to ...

Physics / General Physics

created Mar 22, 2012 | popularity 4.6 / 5 (11) | comments 10 | with audio podcast

Metamaterials may advance with new femtosecond laser technique

Researchers in applied physics have cleared an important hurdle in the development of advanced materials, called metamaterials, that bend light in unusual ways.

Nanotechnology / Nanophysics

created Mar 08, 2012 | popularity 4.2 / 5 (5) | comments 4 | with audio podcast

'Invisibility' cloak could protect buildings from earthquakes

University of Manchester mathematicians have developed the theory for a Harry Potter style 'cloaking' device which could protect buildings from earthquakes.

Other Sciences / Mathematics

created Feb 14, 2012 | popularity 5 / 5 (8) | comments 12 | with audio podcast

Scientists create first free-standing 3-D cloak

Researchers in the US have, for the first time, cloaked a three-dimensional object standing in free space, bringing the much-talked-about invisibility cloak one step closer to reality.

Physics / General Physics

created Jan 26, 2012 | popularity 5 / 5 (10) | comments 7 | with audio podcast

Unveiling malaria's 'invisibility cloak'

The discovery by researchers from the Walter and Eliza Hall Institute of a molecule that is key to malaria's 'invisibility cloak' will help to better understand how the parasite causes disease and escapes from the defenses ...

Biology / Cell & Microbiology

created Jan 18, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

A breakthrough in superlens development: Cheap, simple lens to let us see a single virus

A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in ...

Physics / Optics & Photonics

created Jan 09, 2012 | popularity 4.8 / 5 (29) | comments 4 | with audio podcast

Pentagon-backed 'time cloak' stops the clock (Update)

Pentagon-supported physicists on Wednesday said they had devised a "time cloak" that briefly makes an event undetectable.

Physics / General Physics

created Jan 04, 2012 | popularity 3.1 / 5 (64) | comments 43 | with audio podcast

Researchers transfer the concept of an optical invisibility cloak to sound waves

Progress of metamaterials in nanotechnologies has made the invisibility cloak, a subject of mythology and science fiction, become reality: Light waves can be guided around an object to be hidden, in such a way that this object ...

Physics / General Physics

created Dec 20, 2011 | popularity 4.5 / 5 (2) | comments 1

Chemically assembled metamaterials may lead to superlenses

(PhysOrg.com) -- Nanomanufacturing technology has enabled scientists to create metamaterials -- stuff that never existed in nature -- with unusual optical properties. They could lead to "superlenses" able ...

Chemistry / Materials Science

created Nov 02, 2011 | popularity 5 / 5 (9) | comments 7 | with audio podcast

'Mirage-effect' helps researchers hide objects (w/ video)

Scientists have created a working cloaking device that not only takes advantage of one of nature's most bizarre phenomenon, but also boasts unique features; it has an 'on and off' switch and is best used underwater.

Nanotechnology / Nanophysics

created Oct 04, 2011 | popularity 4.5 / 5 (11) | comments 9 | with audio podcast

Cloaking magnetic fields: The first 'antimagnet' device developed

Spanish researchers have designed what they believe to be a new type of magnetic cloak, which shields objects from external magnetic fields, while at the same time preventing any magnetic internal fields from ...

Physics / General Physics

created Sep 23, 2011 | popularity 4.3 / 5 (15) | comments 14 | with audio podcast

Cloak

A cloak is a type of loose garment that is worn over indoor clothing and serves the same purpose as an overcoat; it protects the wearer from the cold, rain or wind for example, or it may form part of a fashionable outfit or uniform. Cloaks are as old as human history; there has nearly always been some form of long, unstructured outer garment used to protect people from the weather. Over time cloak designs have been changed to match current styles and textile needs.

Cloaks generally fasten at the neck or over the shoulder, vary in length, from hip all the way down to the ankle, mid-calf being the normal length. They may have an attached hood, and may cover and fasten down the front, in which case they have holes or slits for the hands to pass through. However, cloaks are almost always sleeveless.

For more information about Cloak, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.