How we indian think and what we do?

I woke up after having bed tea today morning and saw the news papers front page article and i was completely surprised to see this
ARE WE LIKE THIS ONLY?
what really are our standards of hygiene?Are we conditioned to accept muck or are we hemmed in by a lack of sanitation infrastructure?As rich nations catch us on the CWG( commonwealth games) back foot,rubbing in our third-worldness,is it our culture or complacence that's to blame?
(actually there was a picture of western style toilet and on the top of commode was footprints of shoes )think what this shows.
Many of my friends also do same i request them please don't live in older age OK.

LAB MANUAL FOR 5th SEM EEE(POWER ELECTRONICS- 2ND CYCLE)

To download POWER ELECTRONICS second cycle experiments click here

Method to enhance solar energy found

MIT chemical engineers have found that by using carbon nanotubes (hollow tubes of carbon atoms) solar energy can be concentrated 100 times more than a regular photovoltaic cell. Such nanotubes could form antennas that capture and focus light energy, potentially allowing much smaller and more powerful solar arrays. Michael Strano, the Charles and Hilda Roddey Associate Professor of Chemical Engineering and leader of the research team and his students tell that their new carbon nanotube antenna, or “solar funnel” might also be useful for any other application that requires light to be concentrated, such as night-vision goggles or telescopes. Solar panels generate electricity by converting photons (packets of light energy) into an electric current, reports Nature. Strano’s nanotube antenna boosts the number of photons that can be captured and transforms the light into energy that can be funneled into a solar cell. The antenna consists of a fibrous rope about 10 micrometers (millionths of a meter) long and four micrometers thick, containing about 30 million carbon nanotubes. Strano’s team built, for the first time, a fibre made of two layers of nanotubes with different electrical properties - specifically, different bandgaps. In any material, electrons can exist at different energy levels. When a photon strikes the surface, it excites an electron to a higher energy level, which is specific to the material. The interaction between the energized electron and the hole it leaves behind is called an exciton, and the difference in energy levels between the hole and the electron is known as the bandgap. The inner layer of the antenna contains nanotubes with a small bandgap, and nanotubes in the outer layer have a higher bandgap. That’s important because excitons like to flow from high to low energy. In this case, that means the excitons in the outer layer flow to the inner layer, where they can exist in a lower (but still excited) energy state. Therefore, when light energy strikes the material, all of the excitons flow to the centre of the fibre, where they are concentrated. The study has been published in the Sept. 12 online edition of the journal Nature Materials. http://www.siliconindia.com/shownews/Faster_cancer_prognosis_courtesy_IISc_and_Apple-nid-70421-cid--sid-.html

WHAT IS RENEWABLE ENERGY SOURCE

Today we all are suffering many problems which is generated by global warming so need to think about it how can we reduce this and what are the way to do so......

Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which arerenewable (naturally replenished). In 2008, about 19% of global final energy consumption came from renewables, with 13% coming from traditional biomass, which is mainly used for heating, and 3.2% from hydroelectricity.^[1] New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 2.7% and are growing very rapidly.^[1] The share of renewables in electricity generation is around 18%, with 15% of global electricity coming from hydroelectricity and 3% from new renewables.^[1][2]

Wind power is growing at the rate of 30% annually, with a worldwide installed capacity of 158 gigawatts (GW) in 2009,^[3][4] and is widely used in Europe, Asia, and the United States.^[5] At the end of 2009, cumulative global photovoltaic (PV) installations surpassed 21 GW^[6][7][8] and PV power stations are popular in Germany and Spain.^[9] Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 megawatt (MW) SEGS power plant in the Mojave Desert.^[10] The world's largest geothermal power installation is The Geysers in California, with a rated capacity of 750 MW. Brazil has one of the largest renewable energy programs in the world, involving production ofethanol fuel from sugar cane, and ethanol now provides 18% of the country's automotive fuel.^[11] Ethanol fuel is also widely available in the USA, the world's largest producer in absolute terms, although not as a percentage of its total motor fuel use.

While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development.^[12] Globally, an estimated 3 million households get power from small solar PV systems. Micro-hydrosystems configured into village-scale or county-scale mini-grids serve many areas.^[13] More than 30 million rural households get lighting and cooking from biogas made in household-scale digesters. Biomass cookstoves are used by 160 million households.^[13]

Climate change concerns, coupled with high oil prices, peak oil, and increasing government support, are driving increasing renewable energy legislation, incentives and commercialization.^[14] New government spending, regulation and policies helped the industry weather the 2009 economic crisis better than many other sectors.^[15]

GEOTHERMAL ENERGY SOURCE

well lets check this also what is actually geothermal energy and from where it comes here i have collected some information

geothermal energy (from the Greek roots geo, meaning earth, and thermos, meaning heat) is power extracted from heat stored in the earth. This geothermal energy originates from the original formation of the planet, from radioactive decay of minerals, from volcanic activity and from solar energy absorbed at the surface. It has been used for bathing since Paleolithic times and for space heating since ancient Roman times, but is now better known for generating electricity. Worldwide, about 10,715 megawatts (MW) of geothermal power is online in 24 countries. An additional 28 gigawatts of direct geothermal heating capacity is installed for district heating, space heating, spas, industrial processes, desalination and agricultural applications.^[1]

Geothermal power is cost effective, reliable, sustainable, and environmentally friendly, but has historically been limited to areas neartectonic plate boundaries. Recent technological advances have dramatically expanded the range and size of viable resources, especially for applications such as home heating, opening a potential for widespread exploitation. Geothermal wells release greenhouse gases trapped deep within the earth, but these emissions are much lower per energy unit than those of fossil fuels. As a result, geothermal power has the potential to help mitigate global warming if widely deployed in place of fossil fuels.

The Earth's geothermal resources are theoretically more than adequate to supply humanity's energy needs, but only a very small fraction may be profitably exploited. Drilling and exploration for deep resources is very expensive.^{[citation needed]} Forecasts for the future of geothermal power depend on assumptions about technology, energy prices, subsidies, and interest rates.