Solar day lamps (SDL) are simple and cost-effective. A few examples of SDLs have been described in [1], [2] and [3]. An SDL without any energy storage element suffers from frequent changes in the ...

Billions of people continue to burn dangerous and costly kerosene in lamps to see at night. Start-up d.light design, which aims for no less than to eliminate kerosene around the world within a decade, ...

A solar day lamp is a simple, inexpensive device for bringing “daylight” to dark interior spaces whenever the sun is shining. This article provides complete instructions for designing lamps using both ...

When you think about harnessing the power of solar energy for your home, the cost point of solar panels may be intimidating. But, what about a low-cost way to use solar power? With solar powered ...