Archive for February, 2009

Earth Hour 2009

Earth Hour 2009, show your commitment to stop climate change …

February 22, 2009 Tags: climate change, earth hour, energy conservation, Environment Posted in: Climate Change, Environment, Renewable Energy No Comments

Global Energy Balance Explained

NASA’s Earth Observatory explains the Earth’s energy budget.

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February 16, 2009 Tags: climate change, greenhouse gases, NASA Posted in: Climate Change, Environment No Comments

Google enters the smart grid arena

Google’s PowerMeter enables the smart grid.

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February 16, 2009 Tags: energy conservation, PowerMeter, renewable energy, smart grid Posted in: Climate Change, Renewable Energy No Comments

Have kids, want to save power? Try this …

Ways to save on lighting, electronic wall timers …

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February 8, 2009 Tags: climate change, energy, energy conservation Posted in: Climate Change, Environment, Renewable Energy No Comments

NASA Image of the Day

Snapshot of the International Space Station

On March 13, 2008, the International Space Station passed across the field-of-view of Germany's remote sensing satellite, TerraSAR-X, at a distance of 195 kilometers, or 122 miles, and at a relative speed of 34,540 kilometers per hour, or more than 22,000 mph. In contrast to optical cameras, radar does not 'see' surfaces. Instead, it is much more aware of the edges and corners which bounce back the microwave signal it transmits. Smooth surfaces such as those on the station's solar generators or the radiator panels used to dissipate excess heat, unless directly facing the radar antenna, tend to deflect rather than reflect the radar beam, causing these features to appear on the radar image as dark areas. The radar image of the station therefore looks like a dense collection of bright spots from which the outlines of the space station can be clearly identified. The central element on the station, to which all the modules are docked, has a grid structure that presents a multiplicity of reflecting surfaces to the radar beam, making it readily identifiable. This image has a resolution of about one meter (about 39 inches). In other words, objects can be depicted as discrete units--that is, shown separately--provided that they are at least one meter apart. If they are closer together than that, they tend to merge into a single block on a radar image. Since this image was taken, the station has expanded and is more than 90 percent complete, including a full complement of solar arrays. Image Credit: DLR
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Archive for February, 2009

Earth Hour 2009

Global Energy Balance Explained

Google enters the smart grid arena

Have kids, want to save power? Try this …

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