Introduction
 The Sun is a giant fusion reactor , located some 150 million km from the Earth, radiating 2.3 billion times more energy than what strikes the disk of the Earth which itself is more energy in an hour , than all human civilization directly uses in a year, and it will continue to produce free energy for billions of years.
 A single kilometerwide band of geosynchronous earth orbit experiences enough solar flux in one year (approximately 212 terawattyears) to nearly equal the amount of ene ....etc

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ABSTRACT
A solar cell is a semiconductor device that converts solar energy into electricity by the photovoltaic effect, representing the fundamental power conversion unit of a photovoltaic system ,works under the principle of a P-N junction that absorbs light , releases electrons and holes , creating a voltage in the cell , which is then applied to load; being environmentally aware, and with the price of living rising at an alarming rate, solar power, generating energy from the natural resources of the sun, has in recent times become quite a ....etc

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Solar Energy Materials & Solar Cells 89 (2005) 85“94
Optical and photoelectrical properties of b-In
2
S
3
thin films prepared by two-stage process
Rahana Yoosuf, M.K. Jayaraj
Ã
Department of Physics, Optoelectronics Device Laboratory, Cochin University of Science and Technology,
Kochi 682022, India
Received 11 December 2004; accepted 10 January 2005
Available online 8 March 2005
Abstract
b-In
2
S
3
films were grown on glass as well as on quartz substrates by rapid heating of metallic
indium films in H
2
S atmos ....etc

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Swimming pools provide a great way toexercise and beat the summer heat. Buildingand maintaining a pool, however, alsomeans relatively high costs added to yourhousehold’s budget. There are severalways that you can reduce operating andmaintenance costs, lower water consumption,and conserve heat if you heat yourpool. Many people heat their pools toextend the swimming season and/or tokeep it at a temperature that they are personallycomfortable with. This lets themenjoy the full value from their pool. Solarpool heaters are an option ....etc

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Presented by:
Birendra kr. Pandey


Alternative Energy: A Closer look at Hybrid Energy Systems using wind and solar sources.
Introduction
 The demand for alternative energy sources is increasing each year due to need for clean and renewable sources of energy.
 Hybrid energy systems are ideal for outdoor and/or remote area applications.
 Overview: Wind/Solar Hybrid Systems
Background (cont.)
 A hybrid energy system is a system that consist of two or more alternative energy sourc ....etc

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Abstract:
The oil shocks of 1970s led to spiraling crude oil prices in the world market which prompted planners to view energy security as an issue of national strategic importance. Energy security has an important bearing on achieving national economic development goals and improving the quality of life of the people. World’s dependence on crude oil will continue for most part of the 21st century but the continued dependence on crude oil is loaded against it with inherent price volatility linked to finite global ....etc

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....etc

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electrical conduction in -AgGaO
2 delafossite thin films
Optoelectronics Devices Laboratory, Department of Physics, Cochin University of Science and Technology,
Kochi 682022, India
Received 28 December 2005; accepted 26 March 2006; published online 23 May 2006
Thin films of delafossites of -AgGaO
2
were prepared on -Al
2
O
3
0001 and on Si 100 single crystal substrates by pulsed laser deposition. The films have a band gap of 4.12 eV and a transparency of more than 50% in the visible region. The electrical conductivity at 300 K was 3 ....etc

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http://freespaceopticsfreespaceoptics/images/flightstrata_photo.jpg
Free space optical communications is a line-of-sight (LOS) technology that transmits a modulated beam of visible or infrared light through the atmosphere for broadband communications. In a manner similar to fiber optical communications, free space optics uses a light emitting diode (LED) or laser (light amplification by stimulated emission of radiation) point source for data transmission. However, in free space optics, an energy beam is collimated and transmitted t ....etc

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hi sir
i am bashar ali , Phd student in the first semester. i am interest in spectrum sensing field and this code will help me a lot.
if you can give me i will be appreciated.
Thank you in advance
regards
bashar ali ....etc

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