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A comment on The NYPD Is Using Mobile X-Ray Vans to Spy on Unknown Targets. Parent comment

Re:The NYPD Is Using Mobile X-Ray Vans to Spy on Unknown Tar... by IanCal on Tuesday October 20, 2015 @07:11PM (#10422498)
> beta radiation. It's not as penetrating as alpha

That's the wrong way around. Alpha radiation barely penetrates at all.

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Re:The NYPD Is Using Mobile X-Ray Vans to Spy on Unknown Tar... by saulrh on Tuesday October 20, 2015 @08:54PM (#10422910)
Ah, yeah, meant gamma there.
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