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https://www.youtube.com/watch?v=Zz95_VvTxZM https://www.youtube.com/watch?v=0N17tEW_WEU https://www.youtube.com/watch?v=UpWeU2fvFGs
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# ? Jun 21, 2017 13:23 |
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# ? May 21, 2024 03:05 |
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Bloody Hedgehog posted:The container is airtight. Hot steam inside the container, at atmospheric pressure. Then the cold rain falls on the container, cooling the container and turning the steam back into water, condensing it and pulling a vacuum inside the container. The container is obviously pretty drat strong, but eventually it gives and the vacuum pulls the container in on itself. i assume also, the second the container starts to buckle its structural integrity disappears completely ala a submarine springing a small leak
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# ? Jun 21, 2017 13:24 |
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It's also worth noting that railway tankers have both positive and negative pressure safety valves specifically to prevent implosions/explosions. Given how it's filmed those are probably done with the safety valves blocked on purpose to showcase the forces involved.
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# ? Jun 21, 2017 13:30 |
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Operating under real-world conditions then? http://blogs.sciencemag.org/pipeline/archives/2006/03/08/how_not_to_do_it_liquid_nitrogen_tanks quote:Both the pressure relief and rupture disks had failed for some reason in the past, so they’d been removed and sealed off with metal plugs.
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# ? Jun 21, 2017 14:02 |
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Bloody Hedgehog posted:The container is airtight. Hot steam inside the container, at atmospheric pressure. Then the cold rain falls on the container, cooling the container and turning the steam back into water, condensing it and pulling a vacuum inside the container. The container is obviously pretty drat strong, but eventually it gives and the vacuum pulls the container in on itself. As a physics teacher I can not let this slide by. The vacuum doesn't "pull it in", it's the ambient air pressure that pushes it in. Also, straws don't work by pulling up the liquid, they work because you reduce the pressure in your mouth, allowing the atmospheric pressure that is pressing on the surface of the liquid to force it up the straw.
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# ? Jun 21, 2017 16:25 |
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The Sausages posted:The inverse is also true, 1700 litres of steam will condense into 1 litre of water. Like so: Here's 20L of water into a volcano https://www.youtube.com/watch?v=lDxOhfiFsuc
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# ? Jun 21, 2017 16:26 |
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Elendil004 posted:Speaking of ships hitting things. Last night: Surprisingly the damage is not as bad you would think
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# ? Jun 21, 2017 16:59 |
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https://i.imgur.com/ne22N7y.mp4
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# ? Jun 21, 2017 16:59 |
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I gasped watching that. Holy poo poo that guy was loving lucky.
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# ? Jun 21, 2017 17:16 |
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^^^ Me too. gently caress. Not what I was expecting.
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# ? Jun 21, 2017 17:19 |
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Attempted Murder
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# ? Jun 21, 2017 18:33 |
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there can't possibly be an actuated release for the bucket attach point, right? RIGHT??
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# ? Jun 21, 2017 18:51 |
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Ol Standard Retard posted:there can't possibly be an actuated release for the bucket attach point, right? In my uninformed opinion it looks like holding it in that position for too long caused something to snap that was weaker than it was supposed to be.
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# ? Jun 21, 2017 18:54 |
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Maybe they were in the process of removing the bucket (I think you have to pull out two big pins), and it stuck in place. Doesn't explain why it got lifted up so high and the guy walked under it though.
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# ? Jun 21, 2017 19:18 |
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Don't some bull dozers have the ability to swap out the attachment like your average home vacuum cleaner?
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# ? Jun 21, 2017 19:23 |
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Yeah, it's held on by a pin. Presumably the pin fell out/someone took it out, that might even be what the ground guy was going after.
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# ? Jun 21, 2017 19:27 |
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Heffer posted:Don't some bull dozers have the ability to swap out the attachment like your average home vacuum cleaner? They use huge solid steel pins that go in the brackets on the bucket. But the bucket needs to be resting on the ground. The weight of the bucket would make it almost impossible to remove the pins while suspended (if installed correctly). Most likely explanation is a lovely weld-job, incorrect pins for the bucket size, or metal fatigue with the brackets.
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# ? Jun 21, 2017 19:29 |
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Three-Phase posted:Yeah I was gonna come back and add a note to my post there. Like the time my employer thought this was a great plan. They instructed me to gently caress with that mess if there was a power outage, and I said, "Sure, sure..." and immediately documented why I wasn't going to touch poo poo.
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# ? Jun 21, 2017 19:35 |
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Malachi Constant posted:As a physics teacher I can not let this slide by. The vacuum doesn't "pull it in", it's the ambient air pressure that pushes it in.
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# ? Jun 21, 2017 19:39 |
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zedprime posted:But like net forces are relative, man. It's all in your head whether it's air pressure pushing in or vacuum pulling in. No because vacuum can't "pull" Do you suppose that lack of something attaches itself to the inside of the vessel and then contracts somehow? There was a great poster on the wall in one of my chem labs back in the day SCIENCE DOESN'T SUCK edit: Trek example: Riker: Sucked into Space
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# ? Jun 21, 2017 20:00 |
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That's why they call it a blowjob, your dick isn't being sucked, the pressure in your partner's mouth has just been reduced creating a vacuum.
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# ? Jun 21, 2017 20:07 |
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Heffer posted:Don't some bull dozers have the ability to swap out the attachment like your average home vacuum cleaner?
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# ? Jun 21, 2017 20:10 |
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# ? Jun 21, 2017 20:11 |
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Wasabi the J posted:Like the time my employer thought this was a great plan. I couldn't come up with something that looked unsafer than that if I tried.
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# ? Jun 21, 2017 20:13 |
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Gumbel2Gumbel posted:I couldn't come up with something that looked unsafer than that if I tried. https://www.youtube.com/watch?v=pQ2dI_B_Ycg
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# ? Jun 21, 2017 20:18 |
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Malachi Constant posted:As a physics teacher I can not let this slide by. The vacuum doesn't "pull it in", it's the ambient air pressure that pushes it in. Oh no, your nerd poo poo is pulling in my fist towards your face, poindexter. You better hope I don't find out how doxxing works and then I show up at whatever D&D/Pokeman shop you hang out at, NERD.
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# ? Jun 21, 2017 20:23 |
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How does he turn it off
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# ? Jun 21, 2017 20:23 |
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Wasabi the J posted:Like the time my employer thought this was a great plan. What'd the clipboard say?
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# ? Jun 21, 2017 20:38 |
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Over There posted:How does he turn it off Hit it with a baseball bat?
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# ? Jun 21, 2017 20:49 |
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Over There posted:How does he turn it off Move to a new house and forget his memories of its existence. edit: Or a shotgun
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# ? Jun 21, 2017 20:57 |
Over There posted:How does he turn it off https://www.youtube.com/watch?v=q-v80a15ScM
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# ? Jun 21, 2017 21:02 |
Okay but he has seriously developed a tool to turn it off. https://www.youtube.com/watch?v=ewKX7NmnDfI
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# ? Jun 21, 2017 21:04 |
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Literally A Person posted:What'd the clipboard say? A series of instructions to potentially backfeed generator power to the city. Seriously, you were supposed to turn on a generator and pop a mains breaker and then something else. I didn't bother to learn what to do. I wasn't going to gently caress with something that loving stupid.
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# ? Jun 21, 2017 22:00 |
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Hubis posted:My physics is a little rusty, but wouldn't Lorenz forces just push that contact apart? Or would that require a lot more amperage? Well yeah you've got the right-hand rule for current flowing through a conductor... As far as current goes certain inrush loads (motor, capacitor, transformer) could cause forces on cables, but in a serious a prolonged short circuit ("bolted" fault) you can get magnetic forces strong enough to whip cables or even damage or warp copper busbars. In a fault I could easily imagine forces strong enough to knock that apart. We got a 480V motor control center that was I believe 1200 amps nominal but the busses inside were rated to withstand the magnetic forces in a short-circuit fault of up to 65,000 amps. I've seen fuses that are rated to like 120,000 amps. Seemingly small and insignificant numbers like how many milliohms per feet of cable, or the length of a cable, or whether that cable is in a plastic conduit, metal conduit, or cable tray can make a huge difference in a fault. Three-Phase fucked around with this message at 22:17 on Jun 21, 2017 |
# ? Jun 21, 2017 22:12 |
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chitoryu12 posted:Okay but he has seriously developed a tool to turn it off. https://www.youtube.com/watch?v=qq80zqdNNJU And boy does this thing carry a tune!
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# ? Jun 21, 2017 22:17 |
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Who made this, and more importantly, why?
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# ? Jun 21, 2017 22:18 |
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I can only assume it was a scheme to assassinate Simone Giertz.
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# ? Jun 21, 2017 22:20 |
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# ? Jun 21, 2017 22:43 |
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I would like to know more.
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# ? Jun 21, 2017 23:00 |
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# ? May 21, 2024 03:05 |
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sneakyfrog posted:I would like to know more. Got caught texting a backhoe, realizes he made a mistake? It's pretty obvious.
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# ? Jun 21, 2017 23:03 |