Polycrystalline silicon or Polysilicon( poly-Si or “poly”) is a material consisting of multiple small silicon crystals.The difference between Silicon Metal and Polysilicon is that Poly is highly pure form of silicon and is much costlier.Polycrystalline silicon can be as much as 99.9999% pure (also known as 4N pure,the 4 denotes the number of 9s after the decimal point).Polysilicon was primarily used by the semi industry till 5-6 years ago and the electronic industry used 9N pure polysilicon.The Solar Industry which has become the main user of polysilicon nowadays can do with 6N pure poly.

Polysilicon is refined to single crystal polysilicon before it can be used by the semiconductor industry.However solar cells can be made even from multicrystalline polysilicon.Monocrystalline solar cells on the other hand are made of single crystal polysilicon and have higher efficiency than those made from multicrystalline polysilicon.Polycrystalline cells can be recognized by a visible grain, a “metal flake effect”. Semiconductor grade (also solar grade) polycrystalline silicon is converted to “single crystal” silicon – meaning that the randomly associated crystallites of silicon in “polycrystalline silicon” are converted to a large “single” crystal.

LED TV is an LCD TV that uses LEDs to illuminate the display. these new sets use LED backlights rather than the fluorescent-type backlights used in most other LCD TVs. LED-backlit LCD TVs cost twice more than standard LCD or plasma TVs. Because of the slim line design of these LED tvs not only is less packaging used, but the vast reduction in overall weight means reduced transport and fuel costs. Most of the LED TVs are mercury free making them extremely eco friendly.

The Indian telecom industry is the world’s fastest growing industry with 792 million mobile phone subscribers as of February 2011. It is also the second largest telecommunication network in the world in terms of number of wireless connections after China. The industry will reach around $80 billion in revenues by next year showing an astounding CAGR of over 25% and will employ a stupendous 1 crore employees making it one of the biggest value creators in India in recent times. The introduction of mobile phones brought a major revolution in the industry. Mobile phones have become a modern day necessity. Be it a professional, a trader, a housewife or a student, everyone has one. The availability of cheap mobiles in the Indian market, is also a major factor in making it available & affordable to the common masses. Today’s mobile phone is not just a phone, it has a built in camera, music system, games & internet enabled networking. These facilities entertain you as well as make you available to work as & when required.

What is Cloud Computing

Cloud computing refers to the use and access of multiple server-based computational resources via a digital network (WAN, Internet connection using the World Wide Web, etc.). Cloud users may access the server resources using a computer, netbook, pad computer, smart phone, or other device. In cloud computing, applications are provided and managed by the cloud server and data is also stored remotely in the cloud configuration. Users do not download and install applications on their own device or computer; all processing and storage is maintained by the cloud server. The on-line services may be offered from a cloud provider or by a private organization.

USA’s NSA possesses formidable strengths in this area using American information technology which is the best in the world.USA has denied the export of critical encryption technology in order to safeguard its lead in the cyber security area.India is taking a leaf from these countries albeit in a late manner.India’s plan will involve recruiting hackers and software professionals under the aegis of its intelligence agencies.A new law also will be passed to prevent exiting Indian laws from prosecuting these recruits.

Google’s paltry $39mm investment in a Wind Farm was puzzling as it really seemed to meet no goals.The investment would not lead to any significant advancement in Wind Technology nor was it big enough to lead to large production of Green Energy.Google has been touting its commitment to Green Energy and has even funded some […]