Monthly Archives: July 2008

Solar Lantern

Posted on July 11, 2008 by Rashid Faridi

A Solar lantern is a simple application of solar photovoltaic technology, which has found good acceptance in rural regions where the power supply is irregular and scarce. Even in the urban areas people prefer a solar lantern as an alternative … Continue reading →

Posted in Alternative Energy, Environment | Leave a comment

How do Photovoltaics Work?

Posted on July 11, 2008 by Rashid Faridi

Photovoltaics is the direct conversion of light into electricity at the atomic level. Some materials exhibit a property known as the photoelectric effect that causes them to absorb photons of light and release electrons. When these free electrons are captured, … Continue reading →

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Why do we care about aerosols?

Posted on July 10, 2008 by Rashid Faridi

Aerosols tend to cause cooling of the Earth’s surface immediately below them. Because most aerosols reflect sunlight back into space, they have a “direct” cooling effect by reducing the amount of solar radiation that reaches the surface. The magnitude of … Continue reading →

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Phoenix Mars Lander Digging in “Snow White” trench

Posted on July 10, 2008 by Rashid Faridi

This image was acquired by NASA’s Phoenix Mars Lander’s Surface Stereo Imager on the 44th Martian day of the mission, or Sol 43 (July 7, 2008), after the May 25, 2008, landing, showing the current sample scraping area in the … Continue reading →

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