Lemmy Shitpost

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[–] frezik@midwest.social 58 points 1 year ago* (last edited 1 year ago) (2 children)

And then they hit the emergency shutdown, which is for when people have a plate in their head and they're stuck to the side of the machine. That one causes all the liquid helium to be quenched, thus needing to be refilled.

There is a slower shutdown that doesn't do that, but, you know, cops.

Every detail of that story was worse than the last, and it's 100% on the cops.

Edit: forgot another detail. The gun is probably magnetized now and might be unsuitable/unsafe for use anymore.

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[–] Exusia@lemmy.world 32 points 1 year ago (1 child)

A button worth $25,000 on the low end to refill+replace the magnet, a million on the high end if it needs total replacement. It calls to me when I sit with the mri techs. Looking like SpongeBob trying to not push it sitting in the back.

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[–] Machinist@lemmy.world 3 points 1 year ago

I understand.

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[–] realbadat@programming.dev 28 points 1 year ago

Thats right! I forgot about that part.

Cops are nightmarish levels of stupidity.

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[–] Phen@lemmy.eco.br 16 points 1 year ago (1 child)

Guns getting sucked into MRI machines is a recurring news story at this point.

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[–] SaltSong@startrek.website 9 points 1 year ago (4 children)

So, a moment of curiosity.

If my theoretical pistol did get pulled into am MRI machine, stuck against it by the magnet, and I, for the purpose of scientific inquiry, pulled the trigger, should I expect the bullet to fire more or less as normal, to fire, but the bullet be pulled back to the machine, or for the bullet to not move, or not move more than an inch or so from the barrel?

hideshow 8 child comments

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[–] selfAwareCoder@programming.dev 13 points 1 year ago (2 children)

But to address your main question, most bullets are not magnetic. Some are, in which case idk how the mri would impact them. But most would fire as normal

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[–] peoplebeproblems@midwest.social 6 points 1 year ago

I guess it depends on the steel parts. I'm sure there are other magnets.

In any case, if the firing pin or hammer or anything in the trigger mechanism is steel, it's going to be difficult to move to actually fire.

Say the bullet has a steel tip or core though, and we are able to fire it. The force pulling that bullet is going to prevent the bullet from going much of anywhere. Let's pretend the barrel and firing chamber are frictionless and indestructible.the bullet will leave the gun, but immediately curve into the magnetic field, inevitably into the MRI itself, but likely not very far.

It would be pretty fun to watch though.

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[–] SaltSong@startrek.website 2 points 1 year ago

Ah, interesting. Good to know.

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[–] MartianSands@sh.itjust.works 13 points 1 year ago (2 children)

Realistically, the mechanism would jam. I doubt the hammer would fall, being squeezed hard against whatever structure supports it

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[–] deranger@sh.itjust.works 4 points 1 year ago (1 child)

Most modern pistols are striker fired not hammer fired.

I’d venture a guess nothing out of the ordinary happens thanks to lube and springs. Gun fires.

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[–] MartianSands@sh.itjust.works 1 point 1 year ago (1 child)

That's an implementation detail, not really relevant to my point.

I don't think you appreciate how powerful those magnets are. Any ferromagnetic object would be doing well to avoid binding up completely when held right up to the device

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[–] deranger@sh.itjust.works 6 points 1 year ago

I do appreciate how strong the magnets are. The force between a two 1cm square steel plates in a 2T field is about 159N or 36 lbs of force.

I do not think the contact area between parts of the trigger / sear etc and striker / whatever else are more than 1cm square, they’re also lubricated. Given the orientation of the pistol could also change, making the friction force less effective, I think it’s possible that a pistol is able to fire after being sucked into the MRI.