[rdtsc]

Neutrons can be used for these things as well. The advantage, say from x-rays, is attenuation is not by material density, where all metals will just look dark, but by thermal neutron absorption cross section. So boron might be dark, but metals won't be.

Muons are much nicer as you don't have to carry a neutron source around with you.

> However, if anyone is now thinking of standing under the bridge to get their body scanned, they shouldn't bother. First, they'd have to stand still for an hour, and second, the security patrol would be there within minutes.

Security patrol will come and bother you if you hand around the bridge for a few minutes?

[thinkingQueen]

> Security patrol will come and bother you if you hand around the bridge for a few minutes?

There’s a land war in Europe. Hundreds of thousands have lost their lives during the past few years. There have been cases of sabotage against the Baltic states as well as the Nordic states. Things are pretty grim there and lurking around basic infrastructure pretty much guarantees a talk with the police.

[jldugger]

Plus Estonia in particular is 200km away from St Petersberg, and 800km from Moscow. They are all but guaranteed to succumb to Russian expansion if allowed to continue unchecked.

[mschuster91]

And it's not just Europe either. The US has suffered from multiple attacks on electrical substations [1] as well with unknown perpetrators (the suspicion is white supremacists), and on top of that come rednecks shooting at power lines and god knows what else.

Paranoia surrounding critical infrastructure is skyrocketing at the moment, and I'd say for a bunch of very good reasons.

[1] https://en.wikipedia.org/wiki/Moore_County_substation_attack

[theultdev]

the "rednecks" are the ones fixing power lines for you.

your neck may not be red because you get to sit inside while they keep your power on for you.

meanwhile you sit inside writing your hateful, elitist, garbage.

the conspiracy theories related to event you linked are ridiculous.

[mschuster91]

> your neck may not be red because you get to sit inside while they keep your power on for you.

Before I got into IT I was working in construction for our local telco provider, believe me I have seen shit.

[rdtsc]

That's certainly a good reason. Thanks for explaining!

[chrisweekly]

Here I was thinking it had something to do with trolls...

Sorry, couldn't resist. Agreed, it's a helpful explanation.

[barrenko]

It's a three days ride (at a leisure pace of like 40 km/h) from Crimea to Bruxelles.