For all those who have dreams and aspirations for quality education, India is the perfect destination. With 343 universities and 17000 colleges, India offers a wide spectrum of courses that are recognised globally. Apart from undergraduate, postgraduate and doctoral courses, there are many training and diploma-level institutes and polytechnics that cater to the growing demand for skill-based and vocational education.
Studying in India, the second largest higher education network in the World, is an enriching experience in itself. A welcoming atmosphere, non-discriminative approach and an assured educational and career growth is what attracts students from all over the world to India. There are universities focusing on the study of medicine, arts & language, journalism, social work, business, commerce, planning, architecture, engineering, and other specialised studies. Most Indian universities teach in English Medium and conduct special language classes for those weak in English.
The Quality education that India offers is within the reach of every income-group considering the reasonable fee structure. With 66 distance education institutions functioning in 60 universities besides 11 open universities, India has an enlarged outreach of distance education as well. So, visit India and be a part of an educational system that lives on the values of quality, growth and truthfulness
Friday, October 31, 2008
Wednesday, October 22, 2008
In The Hunt For Extrasolar Planets, A New Find Is Shattering Records Left And Right.
A planet called WASP-12b is the hottest planet ever discovered (about 4,000 degrees Fahrenheit, or 2,200 degrees Celsius), and orbits its star faster and closer in than any other known world
This sizzling monster whips its way around its parent star about once a day (for comparison, the fastest-circling planet in the solar system, Mercury, orbits the sun once every 88 days).
To make such swift progress, the planet circles extremely close-in to its star — about 2 percent of the distance from the Earth to the sun, in fact, or 2 million miles (3.4 million kilometers).
Wednesday, October 15, 2008
Helsinki Floods
Petteri Sulonen, Helsinki, Finland:
"The ongoing winter in Finland has been extremely freaky: very mild, with record storms, culminating in a rise in the sea level of nearly two metres in Helsinki.
"The city erected flood barriers of cardboard bales, but they didn't do much to help; the water reached the streets."
Friday, October 03, 2008
The Controlled Addition And Removal Of An Electron Represents a Milestone In Atom-Scale Science
As reported in the July 23 issue of Science magazine, IBM scientists Jascha Repp and Gerhard Meyer placed and removed a single electron on an individual gold (Au) atom by positioning the tip of a low-temperature scanning tunneling microscope (STM) above the atom and applying a voltage pulse. This pulse does not affect the lateral position of the gold atom adsorbed on an ultrathin (only two atomic layers thick) insulating sodium chloride (NaCl) film on a metal substrate.
Most importantly, both charge states of the atom are stable, that is, an additional electron remains on it until it is removed by a voltage pulse of reversed sign. The stabilization of the different charge states is achieved by tiny changes in the positions of the atoms in the ionic film. Owing to the film's large ionic polarization, the Cl- ion underneath the gold moves downward, while the surrounding Na+ ions move upward. In the STM image, the new charge state of the gold atom appears as a circular trough around the atom.
Jascha Repp, who designed and carried out the experiment, explains: "A simple electron transfer with no lasting changes of ion-core positions would not be stable because the electron residing in an excited state on the manipulated Au atom would rapidly tunnel beneath the insulating layer into the metal of the substrate."
"Our discovery is an important step towards using a single atom or molecule as a basic building block for possible future atomic-scale technology," says Gerhard Meyer, who leads the STM-related research efforts at IBM's Zurich Research Laboratory. "In the nanoworld, creating complex functionalized structures will require that we control not only the position of atoms, but also the electronic and chemical parameters as well." In 1990, Don Eigler of IBM's Almaden Research Center in San Jose, California, showed that an STM can place atoms on top of a surface with atomic precision. Now, a new capability has been achieved by manipulating the electrons of an atom. Jascha Repp points out: "The chemical and physical properties of ions in general are qualitatively different from those of the corresponding neutral atoms. Therefore our findings will have an impact not only on physics but also on chemistry. This research is likely to aid the atom-scale study of such diverse phenomenon as chemical catalysis to quantum information technology."
To interpret the experimental findings, Fredrik Olsson and Mats Persson from Chalmers University used first-principles density functional theory calculations. In agreement with the experiments, the theoretical investigation also finds two different stable states for Au atoms: One is nearly neutral, the other is negatively charged by one electron. The simple physical mechanism responsible for the existence of different charge states suggests that this finding is a common phenomenon for adsorbates on polar insulating films supported by a metal substrate.
The collaboration between IBM and Chalmers University was conducted within the framework of the European Union (EU) network on "Atomic and Molecular Manipulation as a new Tool for Science and Technology".
Most importantly, both charge states of the atom are stable, that is, an additional electron remains on it until it is removed by a voltage pulse of reversed sign. The stabilization of the different charge states is achieved by tiny changes in the positions of the atoms in the ionic film. Owing to the film's large ionic polarization, the Cl- ion underneath the gold moves downward, while the surrounding Na+ ions move upward. In the STM image, the new charge state of the gold atom appears as a circular trough around the atom.
Jascha Repp, who designed and carried out the experiment, explains: "A simple electron transfer with no lasting changes of ion-core positions would not be stable because the electron residing in an excited state on the manipulated Au atom would rapidly tunnel beneath the insulating layer into the metal of the substrate."
"Our discovery is an important step towards using a single atom or molecule as a basic building block for possible future atomic-scale technology," says Gerhard Meyer, who leads the STM-related research efforts at IBM's Zurich Research Laboratory. "In the nanoworld, creating complex functionalized structures will require that we control not only the position of atoms, but also the electronic and chemical parameters as well." In 1990, Don Eigler of IBM's Almaden Research Center in San Jose, California, showed that an STM can place atoms on top of a surface with atomic precision. Now, a new capability has been achieved by manipulating the electrons of an atom. Jascha Repp points out: "The chemical and physical properties of ions in general are qualitatively different from those of the corresponding neutral atoms. Therefore our findings will have an impact not only on physics but also on chemistry. This research is likely to aid the atom-scale study of such diverse phenomenon as chemical catalysis to quantum information technology."
To interpret the experimental findings, Fredrik Olsson and Mats Persson from Chalmers University used first-principles density functional theory calculations. In agreement with the experiments, the theoretical investigation also finds two different stable states for Au atoms: One is nearly neutral, the other is negatively charged by one electron. The simple physical mechanism responsible for the existence of different charge states suggests that this finding is a common phenomenon for adsorbates on polar insulating films supported by a metal substrate.
The collaboration between IBM and Chalmers University was conducted within the framework of the European Union (EU) network on "Atomic and Molecular Manipulation as a new Tool for Science and Technology".
Subscribe to:
Posts (Atom)