metal ions

Gray Matter

Plate Your 'Pod

How do you keep the back of your iPod clean? Sandpaper and electricity

by Mike Walker:  Mike Walker
I think Apple sells fantastic objects that look like they came from the future. And apparently, in that future we all live in velvet rooms and have no fingers-there´s no other way to explain the ultra-shiny mirrored backside of my new iPod nano, which got scratched and grungy with fingerprints in exactly three seconds. So I gave it a nifty scuff shield and, while I was at it, my own logo, using a superthin layer of electroplated copper.

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Fashion Gets Functional

Potent new â€nanofabrics†repel germs and pollution to keep you healthy

The approach of flu season sends many people scurrying for vaccinations and vitamins. But what if you could avoid the flu and other viruses simply by getting dressed? That´s the idea behind two garments that are part of the â€Glitterati†clothing line designed by Olivia Ong, a senior design major at Cornell University. The two-tone gold dress and metallic jacket made their debut at the Cornell Design League fashion show on April 21.

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Digital Archives

A reader asks: Is it true that CDs can disintegrate after 20 years? How long will my digital photos last?

Yes, CDs sometimes disintegrate within a decade or two, but with proper handling and the use of higher-quality discs, your digital photo album should last a century. The breakdown of discs, known as CD rot, begins with poor care: scratches, bending the disc as you remove it from its case, damage to the edges. But these slight nicks and fractures don’t make rot inevitable. You can avoid it by using CDs coated with gold rather than the more common silver. The science involved here is simple.

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