U.S. federal agencies are deploying new detectors that put the Geiger counter's 90-year-old technology to shame.
The Geiger counter is just about the only sign that he doesn't trust the plant.
Now federal agencies are deploying new detectors that put the Geiger counter's 90-year-old technology to shame.
Be a walking, noisy Geiger counter that registers the presence or absence of quality.
Middletown Mayor Robert Reid still keeps a working Geiger counter in his office, a few miles upstream from the plant.
But while the Geiger counter spots radiation easily, it can't determine which isotope is present, and therefore is unable to tell whether danger is at hand.
Once an isotope causes the crystal to flash, a photosensitive cathode releases electrons into a vacuum tube where a chain reaction produces a cascade, as in the Geiger counter.
Andrew Ferguson, who manages Geiger Counter, a nuclear investment fund, reckons that more than 200 uranium-mining firms have listed on stockmarkets around the world in the past 18 months.
On a fine summer day she drives to Nihonmatsu, 56km (35 miles) from the ruined nuclear plant at Fukushima, and notes her Geiger counter ticking higher: another step in the DIY defence against radioactivity.
"The way that neurons communicate with each other is by how fast they fire pulses, it's a little bit akin to listening to a Geiger counter click, and it's that property that we lock onto, " said Professor Andrew Schwartz from the University of Pittsburgh.
On a typical day a ToorCamper can attend a talk on breaking into Android devices or disassembling microprocessors with acid and silicate solution to divine the secret cryptographic keys Microsoft stores there, learn to build a Geiger counter and scuba dive in a kelp forest in search of the North Pacific giant octopus.
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That is a lot better than nothing, at least for nuclear fallout (for which the model was first developed): there the case for being safe not sorry is overwhelming, and once the fallout has fallen, a Geiger counter will tell you whether the model's forecasts of which places would be affected have turned out to be right.
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Customs agents carry basic Geiger-counter-like devices in their shirt pockets to measure radiation exposure.
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