Wonder if one could use muography to detect passing submarines
Muons used to test the condition of a road bridge in Estonia
21–30 of 54 posts
Re: Muons used to test the condition of a road bridge in Estonia
#22Earlier quoted context omitted.
> 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.
That's certainly a good reason. Thanks for explaining!
Here I was thinking it had something to do with trolls...
Sorry, couldn't resist. Agreed, it's a helpful explanation.
Re: Muons used to test the condition of a road bridge in Estonia
#23on that topic, rust costs us 3.4 trillion per year [1] and the (public) construction industry has not even started to address the issue
Re: Muons used to test the condition of a road bridge in Estonia
#24Wonder if one could use muography to detect passing submarines
It's a bit challenging as the submarine would need to stand still for a while and not be very deep but some people has thought about that.
Re: Muons used to test the condition of a road bridge in Estonia
#25Wonder if one could use muography to detect passing submarines
Another one along these lines is antineutrinos. They're created by fission reactions, so a nuclear reactor puts out a lot of them. From what's available in the open literature, this seems like it might be getting close to being practical.
Re: Muons used to test the condition of a road bridge in Estonia
#26Is there a diagram of this? I'm imagining a plate that "see" at a 180 degree field of vision when cosmic rays hit it from every angle from the sky there are opaque things between the sky and sensor.
Re: Muons used to test the condition of a road bridge in Estonia
#27on that topic, rust costs us 3.4 trillion per year [1] and the (public) construction industry has not even started to address the issue [1] http://impact.nace.org/economic-impact.aspx
Can we have one topic on hackernews that doesn't mention rust?
Re: Muons used to test the condition of a road bridge in Estonia
#28on that topic, rust costs us 3.4 trillion per year [1] and the (public) construction industry has not even started to address the issue [1] http://impact.nace.org/economic-impact.aspx
Can we have one topic on hackernews that doesn't mention rust?
Carefully and purposefully Oxidising Bridges with Rust.
Re: Muons used to test the condition of a road bridge in Estonia
#29Wonder if one could use muography to detect passing submarines
Another one along these lines is antineutrinos. They're created by fission reactions, so a nuclear reactor puts out a lot of them. From what's available in the open literature, this seems like it might be getting close to being practical.
Fission reactors spew neutrinos, no need for anti-
Re: Muons used to test the condition of a road bridge in Estonia
#30Earlier quoted context omitted.
They were indeed able to do this after all [1], and found some unknown voids. [1] https://spectrum.ieee.org/muon-imaging-finds-hidden-chamber-...
At least one was confirmed to indeed be exist - quite fascinating. One day hopefully we can find out if the remaining giant looking open area exists too!
Wouldn't there be other ways to detect voids? Strong X-Rays, penetrating radar, or sound wave / seismic measurements taken from every outside and accessible inside space, combined into a 3d model / visualisation. Or is the stone used that impenetrable? I have no idea about these things.