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From a dark path leading to your front door to some much-needed illumination in your backyard, outdoor light is key. But dealing with odd batteries or pesky outdoor wires is not.
According to astronomer Fred Espenak, who literally writes the book on this stuff (he’s calculated full and new moon distances from Earth through year 2500 on his site AstroPixels.com), October ...
Aootek Solar Motion Sensor Lights. $25 $36. Save $11 with coupon. These lights are entirely powered by the sun and shine a beam over a wide area. They're also waterproof and can detect movement up ...
www.aliteroflight.org. Liter of Light is an open source design for a low-cost light tube (or deck prism or vault light) that refracts solar light to provide daytime interior lighting for dwellings with thin roofs. Daylighting is cheaper than using indoor electric lights during the day.
Passive solar building design. This image shows the characteristics of a Passive Solar home and its benefits. In passive solar building design, windows, walls, and floors are made to collect, store, reflect, and distribute solar energy, in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design ...
The Desert Sunlight Solar Farm is a 550- megawatt (MW AC) photovoltaic power station approximately six miles north of Desert Center, California, United States, in the Mojave Desert. It uses approximately 8.8 million cadmium telluride modules made by the US thin-film manufacturer First Solar. It has the same 550 MW installed capacity as the ...