I'm far from a frequent flier, typically taking one or two round trips a year for our summer camps - and I'll admit to a fair skepticism of the security theater that we have at airport, but...
I find the science that we're using at airports kind of fascinating.
In the future, though, I'll be aiming for the dual-energy CT scanners that this video covers.
The video - once the three-minute intro about travel wraps up - explains how X-rays are absorbed by various materials of various thicknesses.
Oh, warning the Brian does say, "pain in the a**" at about 9:59.
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