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A comment on How to Build a Home-Brew Radon Detector: Measure Radiation with a Webcam.

Re:How to Build a Home-Brew Radon Detector: Measure Radiatio... by vincetogo on Tuesday June 17, 2014 @04:26PM (#7906788)
Shouldn't that be radioactivity? Light is a form of radiation, and I'm pretty sure that webcams can already measure that.
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