Duck and cover was supposed to reduce casualties in the relative outer regions of the blast damage area (which are by far the largest).
Desks
Submitted 2 weeks ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/1cb2a5eb-0c1d-4c70-8002-14ee71004e86.png
Comments
eestileib@sh.itjust.works 2 weeks ago
booly@sh.itjust.works 2 weeks ago
Yeah, a nuclear blast is gonna be totally deadly within a particular radius, no matter what you do. And then at some larger radius, everything outside that radius will be safe, regardless of what you do. So the area in between is going to be the area where the response can make a difference.
And as you mention, the area of the “can actually make a difference” zone is much larger than the “dead-no-matter-what” zone, because it scales by the square of the distance. So if the outer safe radius is twice the inner death radius, the area of the in between zone is gonna be about 3 times the size of the death zone (π(2r)^2 - πr^2 = 3πr). If it’s 3 times the radius, it’ll be 8 times the area.
Randelung@lemmy.world 1 week ago
People only think about extremes. Why do we need seatbelts on a plane? Well, not for the crash, for the tons of turbulence you don’t think about because you’re wearing your seatbelt when they happen.
Mostly_Gristle@lemmy.world 1 week ago
Just keeping people away from the windows could potentially prevent hundreds of thousands of injuries from burns and flying glass in the survivable area of the blast radius. It’d be really hard to overstate what a massive difference that could make when it comes to allocating medical resources in the aftermath.
gofsckyourself@lemmy.world 2 weeks ago
gofsckyourself@lemmy.world 2 weeks ago
sem@lemmy.blahaj.zone 2 weeks ago
What’s the difference between the original and the one in the post?
LovableSidekick@lemmy.world 1 week ago
TBH I was confused by what looked like a cross - I thought it meant Jesus was showing up.
LovableSidekick@lemmy.world 1 week ago
We had an earthquake drill at one place where I worked, where there was an outside door less than 20 feet from our desks. Another guy and I agreed, if there was ever an earthquake we were heading out that door and would wait in the middle of the parking lot until it was over and then help dig bodies out of the rubble. Somebody said, “What about falling debris?” It was a freaking 2-story building, but yeah I conceded we’d be risking it for a second or two as we sprinted clear - vs expecting our cubicle furniture to keep a collapsing building off us lol.
meliaesc@lemmy.world 1 week ago
Stairwells are the most structural sound area of any multi story building.
RegalPotoo@lemmy.world 1 week ago
Having lived through a major earthquake - if it’s a brick or concrete tilt-slab building, you are way better off inside the building. The risk isn’t so much some random piece of something falling off, it’s the entire facade of the building coming down on your head.
LovableSidekick@lemmy.world 1 week ago
Like I said, middle of the parking lot - I’m talking at least 100 ft away from a building that was maybe 30 ft tall.
abfarid@startrek.website 2 weeks ago
Correct me if I’m wrong, but if you’re able to perceive the nuclear explosion and not even go blind, then you aren’t close enough for your house to disintegrate like that.
Zron@lemmy.world 2 weeks ago
The blindness thing is really only for a split second while the fission/fusion is actually happening. By the time the mushroom cloud has formed, the actual explosion was like 30 seconds ago.
If you see a full mushroom cloud, that means the glass in front of you is probably going to rapidly accelerate into your skull when the shockwave hits you.
passiveaggressivesonar@lemmy.world 2 weeks ago
Wow how is it so fast
I guess that’s why it has to be enriched so much
somebodysomewhere@lemmy.world 1 week ago
Boom. Roasted.
Zerush@lemmy.ml 1 week ago
Kolanaki@yiffit.net 2 weeks ago
“And after the all clear had rung, we could crawl out from under our desks, go outside, and FUCKING MELT!”
BatmanAoD@lemmy.world 1 week ago
Iron Giant did it better.
hemko@lemmy.dbzer0.com 2 weeks ago
It’s to protect from falling shit from the ceiling. How much it helps depends is debatable but it’s best they have there in school.
In Finland we have bomb shelters everywhere, it’s arguably more effective
oxideseven@lemmy.ca 2 weeks ago
It’s also to give people something to do. Something to practice and focus on getting right. Gives hope and keeps people from getting caught in a panic loop.
blackluster117@possumpat.io 2 weeks ago
Man, that is so depressing to read though.
hemko@lemmy.dbzer0.com 2 weeks ago
This too, very much
Valmond@lemmy.world 2 weeks ago
In sweden we had nuke safe kindergartens, concrete slides to put in the windows and all.
We remember russia and the fucking soviet union.
Jumi@lemmy.world 2 weeks ago
That edit is expected of anyone Finnish.
Sincerely, a drunk Bavarian
SomeAmateur@sh.itjust.works 2 weeks ago
In WW1 armies learned helmets were a good idea when artillery kicked up big chunks of debris killing unlucky soldiers when it rained down on them. Ballistic protection was an afterthought that came along later.
So yeah better than nothing I guess, same with tornado drills our schools have sometimes
cynar@lemmy.world 1 week ago
They almost stopped using helmets again, too. The number of head injuries skyrocketed. Thankfully, someone pointed out to command that the helmets weren’t causing the injuries, but converting fatalities into injuries. They hadn’t been recording head injuries on corpses.
sonori@beehaw.org 1 week ago
It also helps against what tends to be modeled and seen as the largest cause of injury during a nuclear scale explosion like that seen in Beirut, namely shards of glass, though it definitely helps survive falling beams in timber framed buildings.
Remember, thanks to the wonders of the inverse square law you are statistically far more likely to be in the area that gets light to moderate blast damage from the pressure wave rather than core of the blast.