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Sagebrush posted:Yeah. It is worth pointing out that a AA battery can source about 1-2 amps when short-circuited, and it takes less than 100 mA (0.1 amps) to kill. 20 mA (0.02A) will give you a nasty shock. A AA battery can provide orders of magnitude more current than what is dangerous. But it doesn't kill you to hold one, because the voltage is 1.5v, so the actual current you experience on your skin is 0.00015A. This is a physical law that applies to every 1.5v source, regardless of whether it's a watch battery or the output winding of a welding transformer. I seem to recall from my highschool electricity class its like .05 milliamps is the minimum that can kill you. But on the other hand people are different and maybe less can kill you if you're in poor health, or if its just your unlucky day or whatever. E: just for the record, not trying to say that with some sort of authority, just saying thats what I recall. But I was high as gently caress in most of those classes.
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Apr 18, 2022 02:09
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If you break the skin with, say, a pair of voltmeter probes, magical things can happen.
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Apr 18, 2022 02:09
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https://darwinawards.com/darwin/darwin1999-50.html posted:The sailor took a probe in each hand to measure his bodily resistance from thumb to thumb. But the probes had sharp tips, and in his excitement he pressed his thumbs hard enough against the probes to break the skin. Once the salty conducting fluid known as blood was available, the current from the multimeter travelled right across the sailor's heart, disrupting the electrical regulation of his heartbeat. He died before he could record his Ohms. Found a very OSHA band name looking for that article. https://youtu.be/nO_3T8z21Fs
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Apr 18, 2022 02:14
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Platystemon posted:If you break the skin with, say, a pair of voltmeter probes, magical things can happen. Is that story about the sailor who died playing with the probes of a voltmeter an urban legend, or what? EDIT: drat!
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Apr 18, 2022 02:14
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Uthor posted:I know they push less for riders to wear helmets in countries with great bike lane infrastructure, but I hope that bird is okay if they were to fall off or get in an accident. I’m more worried about its feathers getting caught in the spokes
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Apr 18, 2022 02:25
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wesleywillis posted:I seem to recall from my highschool electricity class its like .05 milliamps is the minimum that can kill you. But on the other hand people are different and maybe less can kill you if you're in poor health, or if its just your unlucky day or whatever. I don't think anyone would die from 50 microamps. 5 milliamps, maybe, depending on the situation. The main ways people die from electricity are, in relative descending order of current involved: 1) total body explosion a la doctor manhattan 2) incinerated by electric arc (some overlap with previous) 3) burned to death internally 4) heart disrupted/stopped 5) breathing disrupted/stopped That last one is more complex because, while a single electric shock can cause your heart to start beating irregularly, your breathing usually will sort itself out once the current is gone. So what usually happens in that case is the person grabs a live wire or something, all of their muscles contract, and their hand clenches down on the thing they just grabbed. They can't let go of the wire, their breathing is paralyzed too, and they just suffocate to death unless someone shuts off the current. Your muscles will twitch at single-digit milliamps and contract fully at 5-10, so that's the situation where a current that low can kill you.
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Apr 18, 2022 02:30
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imagine dying from electrocution and not having your body get totally blown apart, it would be so disappointing.
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Apr 18, 2022 02:49
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Ror posted:imagine dying from electrocution and not having your body get totally blown apart, it would be so disappointing. Doc Manhattan but actually demon cored. Bruce Banner but ionizing radiation destroys his DNA completely leaving him in that limbo state of waiting to die. Wolverine at Hiroshima but just leaving an adamantium skeleton that has no flesh.
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Apr 18, 2022 03:03
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Captain America dying of heart failure from
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Apr 18, 2022 03:24
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Mister Speaker posted:Captain America dying of heart failure from Bucky, get the pump. No, the other pump.
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Apr 18, 2022 03:33
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Timbersports is pretty OHSA https://youtu.be/Q5SX-rGeZ-0
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Apr 18, 2022 03:53
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Mister Speaker posted:Captain America dying of heart failure from
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Apr 18, 2022 04:24
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Uthor posted:I know they push less for riders to wear helmets in countries with great bike lane infrastructure, but I hope that bird is okay if they were to fall off or get in an accident. It's a peafowl - no brain, no protection needed. The truck box sides should be extended to make the horse feel more secure. That's what stake pockets are for. otoh this horse has obviously seen this rodeo before. I'm offended the horse isn't wearing eye protection. If you're going to transport like this the animal needs goggles or at least a fine weave fly mask to protect its eyes. loving amateurs.
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Apr 18, 2022 04:29
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dont forget the end of the episode. https://www.youtube.com/watch?v=PDxxO50WxZ4 Batman "non lethal" takedowns. 1) Two dudes under giant paper rolls. 2) Vemon OD/roidrage, also minor explosion and minor building rubble crushing.
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Apr 18, 2022 05:06
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PhazonLink posted:dont forget the end of the episode. Clearly the paper protected them from the fire and rubble.
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Apr 18, 2022 05:16
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PhazonLink posted:dont forget the end of the episode. In the Return of the Joker movie, basically half of Gotham gets sat-lasered to atoms while he's trading punches.
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Apr 18, 2022 05:27
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Sagebrush posted:I don't think anyone would die from 50 microamps. 5 milliamps, maybe, depending on the situation. It’s also possible that the heart rhythm is affected without initial symptoms, but you go into atrial fibrillation some time later. Our yearly electrical safety training says that if you get shocked you're supposed to have an ECG taken even if you feel fine.
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Apr 18, 2022 11:28
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From a ways back, but I appreciate that our lads here placed a rug beneath the workspace for extra safety. 10/10 Vampire Panties posted:It's called percussive maintenance and its art A friend of mine works on a little box of sensors which goes on agricultural irrigation gear to capture all manner of data and control flow. Farmers are a big fan of percussive maintenance, so they toyed with the idea of designing it in a way strikes could fix a break, or alternatively triggering scary sounds when the unit sensed strikes. Hard to get octogenarian farmers to stop smacking poo poo with hammers! ThePopeOfFun fucked around with this message at 15:52 on Apr 18, 2022 |
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Apr 18, 2022 15:46
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The Bandit posted:Honestly better than riding the B line Counterpoint: The B line can get you to T Anthony's, the best pizza in town. Also there's a dispensary there now, so all the better.
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Apr 18, 2022 16:01
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https://i.imgur.com/hFFMGUm.mp4
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Apr 18, 2022 17:09
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https://www.youtube.com/watch?v=OL0Dms596NA
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Apr 18, 2022 17:32
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Orlando Free Fall operators altered safety features before teen’s death, report says https://www.orlandosentinel.com/bus...lmla-story.html quote:
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Apr 18, 2022 20:42
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https://i.imgur.com/5phaoE5.mp4
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Apr 18, 2022 20:49
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Great White's new tourbus.
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Apr 18, 2022 20:52
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Hybrid battery fire? That looks intense.
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Apr 18, 2022 20:53
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Mr. Nice! posted:Great White's new tourbus. 
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Apr 18, 2022 20:53
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Apr 18, 2022 21:04
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ThePopeOfFun posted:Hybrid battery fire? That looks intense. I'd guess CNG A battery would weigh too much to put that high up in a vehicle IMO
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Apr 18, 2022 21:04
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Hell yeah new Mad Max.
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Apr 18, 2022 21:09
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Mr. Nice! posted:Great White's new tourbus. Dark.
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Apr 18, 2022 21:14
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`Nemesis posted:I'd guess CNG Yeah you beat me to it, CNG is much more common in buses. That looks like a sustained high-pressure stream. I'm wondering what on each could have ruptured the tank though, they're usually made from wrapped carbon fiber and can stop bullets: https://www.youtube.com/watch?v=irvktfQvu4M&t=62s Maybe a valve failed or something.
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Apr 18, 2022 21:16
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It's just a safety feature to discourage drivers from passing the bus when it's stopped.
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Apr 18, 2022 21:22
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Mr. Nice! posted:Great White's new tourbus. Brutal
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Apr 18, 2022 21:23
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I didn't know that Ms. Frizzle was out of retirement.
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Apr 18, 2022 21:58
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 what the gently caress could possibly cause jets of fire to come from the top, of the back, of a bus??
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Apr 18, 2022 22:09
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Zero One posted:Orlando Free Fall operators altered safety features before teen’s death, report says welp, I ain't going on rides ever again
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Apr 18, 2022 22:11
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empty whippet box posted:
Compressed natural gas as fuel in a tank on top of the bus.
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Apr 18, 2022 22:11
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Zero VGS posted:Yeah you beat me to it, CNG is much more common in buses. That looks like a sustained high-pressure stream. I'm wondering what on each could have ruptured the tank though, they're usually made from wrapped carbon fiber and can stop bullets: It's supposed to do that, the tank is not damaged. There's a pressure relief valve that jets out vapor in the event that the tank is being heated by a fire, so that there is a controlled release of gas in one of those jets, instead of a huge immediate explosion from the tank rupturing due to over pressuring. https://www.youtube.com/watch?v=UM0jtD_OWLU Seeing those jets means it's time to GTFO, cause there still might be an explosion, and those are your warning. jetz0r fucked around with this message at 22:17 on Apr 18, 2022 |
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Apr 18, 2022 22:13
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jetz0r posted:It's supposed to do that, the tank is not damaged. There's a pressure relief valve that jets out vapor in the event that the tank is being heated by a fire, so that there is a controlled release of gas in one of those jets, instead of a huge immediate explosion from the tank rupturing due to over pressuring. drat so this is literally a safety feature working as intended. that's badass
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Apr 18, 2022 22:17
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Zero One posted:Orlando Free Fall operators altered safety features before teen’s death, report says So like, straight up manslaughter, then
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Apr 18, 2022 22:19
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