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MagneLink-03 (Custom).jpg
magnelink.jpg

Interesting article over at AAAS’s ScienceNOW about MagneLink, a short-range wireless communications system being developed by Lockheed-Martin that uses magnetic fields, rather than radio waves, to transmit information. Supposedly Tesla first experimented with such a system, hoping to compete with radio, in the 1890s. For most wireless applications, radio is clearly a superior system; magnetic wave communicators suffer from limited range and poor signal-to-noise ratios. There’s one thing they can do, however, that radio can’t: easily transmit through hundreds of meters of rock or clay. They can, therefore, be depended on in the event of a mining accident to allow trapped workers to communicate with rescue personnel in situations where radio is impossible and wired systems may be inoperable or inaccessible.

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Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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