Your search for "sunglasses" returned 14 results
Whether you're hitting the surf or the slopes or just spending a day on the lake, sunglasses are a must-have accessory. Find out if the $10 sunglasses are as good as the high-cost ones.
Solar-powered sunglasses could provide a new way to generate electricity. Learn about the workings of solar-powered sunglasses.
I recently bought a pair of mirrored sunglasses and they are already scratched. Isn't there a way to make them scratch-resistant?
My glasses have an anti-reflective coating. How does that work?
How have NASA space helmets changed optics? Visit HowStuffWorks to learn how NASA space helmets changed optics forever.
Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription.
How can my glasses change from transparent, when I'm inside, to dark when I go outdoors?
Nanocrystals have exciting new potential in energy production. Learn more about the place of nanocrystals in alternative energy on HowStuffWorks.
Ocean currents may be driven by tides, winds or differences in density. Learn how ocean currents affect marine transportation and nutrient cycling.
Solar cells use sunlight to produce electricity. But is the 'solar revolution' upon us? Learn all about solar cells, silicon solar cells and solar power.
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