Although changes to the law have not yet been formally introduced, they'll likely result in retailers handing out "tip sheets" to customers that explain how to minimize radiation exposure from their new handsets. Ok, you win this time, reason, but we can still debate image artifacting on certain long-form birth certificates... to the choppa!"The specific absorption rate isn't a very useful measure because it's the peak reading on a variety of tests conducted on cell phones to measure their radiation, but doesn't indicate the average amount of radiation a user would generally be exposed to. You could buy a lower SAR phone, but on average it could produce more radiation than a higher SAR phone."
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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