4 ms·
It's a Darwin Award because you have to go out of your way to achieve it. When was the last time you plugged in a USB device while bleeding profusely from both
by zyx321 12y ago
It's a Darwin Award because you have to go out of your way to achieve it. When was the last time you plugged in a USB device while bleeding profusely from both hands and/or standing barefoot in a pool of your own blood?
Unless you are actively, visibly bleeding, it's going take well over 50V to cause any sort of lasting harm. Not to mention that it'll almost certainly default to 5V unless both ends are plugged in to devices supporting higher voltage.
- DanBC 12y agoHe was not bleeding profusely from both hands nor standing in a pool of blood. He stuck the probes into his thumbs. This sub thread is not so much about whether it is probable that a person will die but whether it is possible that a person could die. And, with some convolutions, you can work out a situation where a person could indeed die. Importantly rasz_pl is claiming that 50 mA cannot kill you. The rule of thumb is 50 mA at 50 V across the heart is enough to kill you. This voltage level is dropped if the skin is broken - and you don't need a big wound. If you're saying it's fantastically unlikely to actually happen: I agree.
- rasz_pl 12y agoso many clueless people downvoting :/ >50 mA at 50 V across the heart is enough to kill you. 1 Voltage doesnt matter! 2 AC 60hz, not DC. I dont know the state of safety education in US, but in Europe it was the first thing on the first day of EE lab. Quick google: "The threshold for ventricular fibrillation for direct current shocks longer than 2 seconds is 150 mA as compared with 50 mA for 60-Hz shocks; for shocks shorter than 0.2 seconds, the threshold is the same as that for 60-HZ shocks, that is, approximately 500 mA" so >2 seconds at 45 volts if you jam two live wires at 45V into your open wounds across the heart and here are some funny, but educational yt clips https://www.youtube.com/watch?v=hp97GjuULX8 https://www.youtube.com/watch?v=hp97GjuULX8 https://www.youtube.com/watch?v=XDf2nhfxVzg https://www.youtube.com/watch?v=XDf2nhfxVzg
- DanBC 12y agoThe downvotes are because you are wrong. You start this post saying "Voltage doesn't matter!" but end it with "so >2 seconds at 45 volts if you jam two live wires at 45V into your open wounds across the heart" - so which is it? https://van.physics.illinois.edu/qa/listing.php?id=1335 https://van.physics.illinois.edu/qa/listing.php?id=1335 https://www.physics.ohio-state.edu/~p616/safety/fatal_current.html https://www.physics.ohio-state.edu/~p616/safety/fatal_curren... Fatal current is between 100 mA and 200 mA. Internal resistance of human body (and this doesn't require "open wounds") is between 300 ohms and 1k ohm.
- rasz_pl 12y agoOhms law. Voltage doesnt matter because its a redundant information, only current matters.