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Paul MacCready Flying on...
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Paul MacCready -- aircraft designer, environmentalist, & lifelong lover of fligh...
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SOLAR TRAINING DIY SOLAR ...
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Solar Training is an interesting idea as True Green Business may be the wave of ...
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Solar Flash Steam Cannon ...
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This is the trough mirror and a Fresnel Lens set. The water was shot in with a h...
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MOONLIGHT LUNAR FRESNEL L...
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This video was shot using concentrated moonlight only. We managed to get 1 volt ...
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SOLAR PANEL DIY Photovolt...
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How to assemble stock solar panels. These are water tight panels that will not s...
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Views: (815) Date: (13-12-09) Time: (00:00:55) |
Description: Created by SteveSpanglerScience.com The Solar Bag measures 15 meters (50 ft) long and 74 cm (29 in) in diameter. The thin, black plastic bag holds over 60 cubic meters (200 cubic ft) of air. Simply fill with air by running, tie off the ends, and let the solar energy of the sun heat the air inside the bag. Within minutes, the bag rises to the sky and floats like a giant solar sausage. www.stevespanglerscience.com ... Solar Bags Balloons Energy Teacher Steve Spangler Science Flying ...