Rotation Speed (Aviation Blog)

rotation speed

Flying planes, launching rockets, buying tech and driving a Leaf

Cool Earth Solar and Their Solar Balloon

Cool Earth Solar’s design is unique in the solar energy world. The company uses an inflatable plastic thin-film balloon (solar concentrator) that, upon inflation, focuses sunlight onto a photovoltaic cell held at its focal point. That results in 400 times the electricity generated by a normal unfocused cell. Cool stuff.

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