Thursday, 24 January 2013

protect cloth

Protective Clothing from Nanoparticles



                 Obviously those involved in high-speed sports require effective protection. Most of modern clothing used to absorb the impact is somewhat bulky and cannot offer full protection. The British company d30 together with Dow Corning developed Active Protection System materials that can solve the problem. Being flexible, these materials are able to move in sync with the human body and instantly harden upon impact.
The team of scientists from the University of Delaware managed to equip materials with nanoparticles that immediately become rigid once a kinetic power threshold is crossed. The invention could be used by athletes that are at a higher risk of getting serious injuries. The new materials can be widely used among downhill skiers and dirt bike racers. At the same time the invention could be used in ballet shoes and soccer balls.

energy shield

Energy Shield (Force Deflector Shield)


Typically, energy shields are some form of force field designed to protect against weapons or elements by deflecting or absorbing their impact. The field is projected along the surface of, or into the space around an object. They usually work by absorbing or dissipating the energy of the incoming attack; prolonged exposure to such attacks weakens the shield and eventually results in the shield’s collapse, making the protected area vulnerable to attack. A number of efforts to design defensive energy fields are occurring in real life. Deflector shield to protect spacecraft that leave the natural defense of the earth’s magnetic field has been invented and is undergoing lab tests. This involves creating a cloud of charged plasma around the ship, which would stop highly charged particles, from the sun or distant supernova, from reaching the ship. The engineering details of how to use this technology on a spaceship must still be worked out

Wednesday, 23 January 2013

access settings in windows8


                                                     If you want to see all your Windows 8 settings in one "Control Panel" style view, there is a real simple way to achieve this called the GodMode (windows 7 had a similar trick).  Simply right click anywhere on your desktop or in windows explorer, create a new folder.  Give it the following name:
All Settings .{ED7BA470-8E54-465E-825C-99712043E01C}
Now, when you double click that "folder" you are presented with the all settings view.  You can make a shortcut to this folder and pin it to Start or to the Taskbar as desired

WI-FI record




               Researchers at the Tokyo University have achieved 3Gbps transfers over a 542GHz wireless connection, part of the 300GHz-3THz terahertz band.  This is twice the speed record held by chip producer Rohm which was set back in November which achieved 1.5Gbps transfers on a 300GHz connection.

With great speeds comes great restrictions though.  The connection will only work over a range of 10 meters (30 feet) before interference is an issue.  However, there are many short range practical applications of such speeds as transmitting media to and from your audio video equipment to your television or for direct Wi-Fi transfers.
They achieved these results using a resonant tunneling diode called an RTD.  The component acts as an oscillator which transmits electro-magnetic signals at very high frequencies as it vibrates.  The RTD was designed for this application and replaced other systems like complex quantum cascade lasers.

The Tech-Stew Take Home

Terahertz transfers are becoming a very popular topic among many companies including AT&T.  AT&T held a conference in December calling this terahertz band as the "next frontier for radio."  What makes the band so attractive is that it is unregulated world-wide, so its readily available at this time.  Team leader, Dr Safumi Suzuki thinks that everyone will use Terahertz related technology within 10 years.

block WI-FI wallpaper




                      Worried about outsiders sniffing your wi-fi to gain access to your computer?  Say hello to Wi-Fi wallpaper, thanks to researchers at France's Grenoble Institut Polytechnique and the Center Technique du Papier.  A Finish materials company called Ahlstrom plans to introduce affordable consumer versions of this wallpaper that blocks wi-fi signals.  It will be commercially known as Metapaper and be available in 2013 in France, no word on a U.S. release date.
The wallpaper can block signals in the 2.45 to 5.5 GHz range, while still allowing television, FM and mobile phone signals to pass.  Metapaper can be applied to a variety of surfaces such as concrete, brick and plaster and you can even paint over it. 
There was an original version that was known as Frequency Selective Surface (FSS) sheeting developed years ago by BAE systems for the U.K. telecommunications firm Ofcom.  It was designed to prevent unauthorized access to private Wi-Fi signals.  However, it was too expensive.  10 square feet would have cost about $800 USD.