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Tuesday, December 14, 2010

Can Sound be used to controll the protesting mass??

We people are very much known to the term LASER an acronym of "Light Amplification by the Stimulated Emission of Radiation."

Pink Laser
The traditional Light Amplification by the Stimulated Emission of Radiation (LASER) uses packets of electromagnetic vibrations called ‘photons’. The result is a continuous photon beam, created via stimulating electrons with an external power source; the release of energy (occurring as the electrons collide) is made in a highly reflective optical cavity. The coherent and controllable shining beam of laser light is due to the photons’ homogenous frequency and rate of oscillation. But Very few of us have heard about the term SASER that operates on principles remarkably similar to those of a laser.

Saser is the acronym for Sound Amplification by Stimulated Emission of Radiation.
The Saser mimics the laser technology, but instead of light waves it employs sound waves, and instead of photons it sends phonons. In addition, instead of sending waves through an optical cavity, the sonic Saser travels through a tiny structure called a ‘superlattice’. This structure is made out of 50 super-thin sheets of two alternating semiconductor materials, Gallium Arsenide and Aluminum Arsenide. In order to achieve the exact effect, each layer must be as thin as air – just a few atoms thick. When the phonons are inside the superlattice, they bounce, multiply and eventually escape in the form of an ultra-high frequency photon beam.

Previous researches have tried to develop sound-emitting devices, but this is the first time a device emits sound waves in the terahertz frequency range. As for the beam itself, it consists of coherent acoustic waves, produced at nanometer wavelengths. The scientific and technological applications vary; one example of the Saser’s potential is the sonogram, a device that can scan for defects in nanometer scale objects like micro-electric circuits.
The main function of a saser or phonon laser is to produce a highly coherent beam of ultrasound sasers are of much current fundamental and technological interest.
In the 50 years since Theodore Maiman demonstrated the first working laser, physicists have labored to build devices capable of controlling sound waves in the same way that optical lasers manipulate light. This year, two teams of researchers announced the development of successful sound-based lasers, or “sasers.”
Optical lasers use quantum effects to produce an intense beam of light of a single frequency, or color. The big challenge in translating that capability to sound has been finding an analogous way to amplify just one sonic frequency. Physicist Tony Kent and his colleagues at the University of Nottingham in England managed to create such an amplifier from a thin, layered lattice made of two semiconductors, gallium arsenide and aluminum arsenide. The resulting saser can build up an intense, pure sound wave at a specific frequency in the terahertz range (far, far above the limit of human hearing) for a few billionths of a second.
Researchers’ next goal is to lengthen the duration of the sonic amplification. Caltech physicist Kerry Vahala and his group are making progress in that direction with a different type of acoustic laser. Their technique relies on firing an optical laser at tiny glass membranes to amplify sound. Unlike the Nottingham saser, Caltech’s device can run continuously, but it operates at a slower speed of 50 megahertz. Vahala is working to boost that frequency into higher ranges, which will probably be more useful for acoustic imaging.
Other potential applications for sasers include detecting defects in microscopic structures and improving signal processing in semiconductor chips, the scientists say. Vahala has no doubt that once the technology matures, it will quickly find all kinds of other uses as well. After all, optical lasers now perform eye surgery, scan groceries, and play movies off DVDs. “But when the laser first came out,” Vahala says, “no one had the foggiest idea what to do with it.”

 Using sound beams to control crowds isn't new, but never before have systems been able to create sounds reaching terahertz frequencies, earning them the name "saser."
Signaling the dawn of the true saser era, physicists from the UK and Ukraine have broken this apparently elusive terahertz sound barrier. Unlike lasers that shoot photons in a tight beam of light, sasers are able to emit dispersed vibrations in high frequences of sound waves, creating nausea and confusion when used on humans.
The latest and most powerful saser has proven to be able to produce phonons—some quantum-level measurement of vibration that could (one day) be used to cure cancer or shoot enemies, among other things—in distant objects. These early tests of the saser reveal its potential of one day (we think) being able to make someone explode, from the inside out, using just a handful of terahertz—similar to what would happen to your brain at a Hannah Montana concert.

Sunday, December 12, 2010

Bryan Adams Performing Live Concert In Nepal !!!!

It looks like the coming year will begin on a high note for music lovers  because  the one and only Bryan Adams is to perform in Nepal in 2011.

At a press conference held on December 8 at Soaltee Crowne Plaza, it was revealed  that Adams will perform here on February 20, 2011.


The Bryan Adams live-in-concert is being organised by JPR events and supported by ODC Network. Sunil Hamal, CEO of JPR Events, Suresh Jung Raimajhi and Simant Gurung, CEO and Director of ODC Network were present at the press meet to answer media queries.

They informed that Adams’ agent Roi Lamb had already been here to check out the venue for the event, the hotel where the singer is to stay and the security.

  Bryan Adams (born Bryan Guy Adams, 5 November 1959) is a Canadian rock singer-songwriter, guitarist, bassist, producer, and photographer and best known for his husky voice
Bryan adams performing Live
Adams is the bestselling Canadian male recording artist of all time and has won dozens of awards and nominations, including 18 Juno Awards among 56 nominations, including wins for Best Male Artist in 2000 andMale Vocalist of the Year in 1997 and every year from 1983 to 1987, as well as Junos for Producer, Composer, and Songwriter of the Year. He holds the record for most Juno nominations (seven) in one single night, along with Celine Dion. He has also had 15 Grammy Award nominations including a win for Best Song Written Specifically for a Motion Picture or Television for "(Everything I Do) I Do It for You" in 1992. He has also won MTV, ASCAP, and American Music awards. In addition, he has won two Ivor Novello Awards and has been nominated for several Golden and three times for Academy Awards for his songwriting for films.


One of the coordinators of the event Samden Sherpa said “Nepal celebrates the year 2011 as Tourism Year and Adams’ visit will highlight this in the global .community. Adams is an evergreen icon and the winner of many awards, and his popularity cannot just be ignored.”
bryan adams who is known for husky voice


He also went on to add, “And also February being the month of love, let us start and celebrate the year on a positive note.”b

Hamal claimed, “We had to convince Adams to perform in Nepal since he is already on a world tour. He will be performing in India and Bangladesh as part of the Bryan Adams Live Full Band Show World Tour, and we have managed to procure two days of his time for a tour of Nepal as well. The real idea is to support our Nepal Tourism Year 2011.”
Tudikhel where bryan adams is supposed to perform in 20th february

 Though according to official websites of adams no schedule for his concert in nepal have been fixed. Hope if he come to Nepal that will certainly blow up Nepal in international arena and support the The  Nepal  tourism year to great success.
 Here is the schedule  shown in his official website for others music lovers.


Feb 16,
2011
Hyderabad,
India
HITEX Exhibition Center, HITECH City
Full Band Performance

Feb 15,
2011
New Delhi,
India
N.S.I.C. Stadium, Okhla
Full Band Performance

Feb 13,
2011
Bangalore,
India
Palace Grounds
 Full Band Performance

Feb 12,
2011
Mumbai,
India
MMRDA Grounds
Full Band Performance

Feb 11,
2011
Pune,
India
Amanora Township at Magarpatta
Full Band Performance


Friday, December 10, 2010

Charge your mobile with out electricity!!!

Have you ever been in trouble when the battery of your mobile is  out of charge and you can’t charge it due to lack of electricity. There is a way to charge it with out electricity. I haven’t tried it ever though I found it from different sources that it is possible to charge the battery of your mobile with out electricity and sources says it works.
 Now, you do not require any mobile charger nor electricity  to charge your mobiles. Only there is need to use green leaf of peepal tree and after some time your mobile will get charged.. Here is the way to charge your mobile phone. Here are the steps and I wish all to try this and let me know whether it works or not. Here are the steps.

 1- Open your mobile cover

2- Take out your battery

3- Take two to three fresh leaves of peepal/pipal/ ashwattha tree

4- Touch the stub of these leaves on your mobile battery terminal for a minute

5- Clean the mobile battery terminal with the soft cloth

6- Put your battery again in your mobile and switch it on

7- Now you can see the result

8- If required repeat the process with fresh leaves


Though it is unbelievable  but according to the botanists, it is just  due to changing of mutual energy into electrical energy power can be saved in battery. Similarly, it is also possible.
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