Word: ultraviolet
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Many shades on the market don't fully block the two main types of ultraviolet radiation (A and B) that have been linked to everything from wrinkles to sunburn to skin cancer. Ophthalmologists are increasingly convinced that prolonged exposure can lead to a host of vision problems as well...
Without the right decal, deeper tints can actually make things much worse. It's normal for our eyes to widen and let in more light when we wear dark glasses. Unless the lenses are already designed to absorb ultraviolet light, the risk of damaging the eyes only grows...
CLIP-ON SHOE DEODORIZER INVENTOR: TANITA CORP. The Deodorant Light for Shoes has two tiny lamps that beam safe levels of ultraviolet light into shoes to eliminate isovaleric acid--the cause of the disease more commonly known as stinky feet. It was developed for a Japanese market obsessed with cleanliness; each 3-min. treatment eliminates 86.7% of acids. That should...
Will adaptive optics make space telescopes obsolete? Not entirely. Space is still the best place to take supersharp pictures in ordinary light. And some radiation--ultraviolet, for example, and some wavelengths of infrared--can't penetrate the atmosphere at all. Moreover, telescopes radiate infrared light of their own, which contaminates celestial images. That's why NASA's plan to launch a Next Generation Space Telescope by 2009 still makes sense. With an 8-m mirror of its own, NGST will be able to see distant galaxies, for example, that no earthly telescope could ever see through the glare...
...often too blind to see the nits. Reading glasses or a good magnifying glass can help. Meanwhile, Dr. Sydney Spiesel, a researcher at Yale, is developing a "nit detector"--a shampoo containing Blankophor, which he says will adhere to the lice and nits and make them visible under ultraviolet light. He plans to market the shampoo and a black light together, making the nitpicking process "Fun!" he says...