Tiny wireless Geiger counter detects radiation

A postage stamp-sized Geiger counter placed unobtrusively in stadiums, subways, malls and other large public spaces could detect radiation and determine whether it's a harmful source, like a dirty bomb.

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<p><a href="http://www.physorg.com/news68824693.html">Tiny wireless Geiger counter detects radiation</a></p> <p>A postage stamp-sized Geiger counter placed unobtrusively in stadiums, subways, malls and other large public spaces could detect radiation and determine whether it's a harmful source, like a dirty bomb.</p>