Hacker News new | past | comments | ask | show | jobs | submit login

Does anyone know how dangerous this actually is? Could an esd be big enough (basically lightning) to hurt or kill you?



I don’t know about this case, but in general, yes, since as you said the concept covers everything from static shocks to a bolt of lightning. As always with electricity though, you can get profoundly lucky, or unlucky depending on a large number of factors.

A large VDG such as those in some science museums for example, could cook your noodle.


On the one hand, this is theoretically true, but, on the other hand, as a person's electrical potential increases (or voltage, for lack of a better term), so does the range of space that the voltage will jump and ultimately dissipate to. The jumping is not the problem -- it's what it's jumping to. Metal or Grounded metal (especially if there's a lot of it) would be the worst thing, but what if instead of grounded metal you had a material with enough resistance to safely dissipate the energy, like some kind of carbon/plastic thingy? Also, you might ask why regular static electricity doesn't kill anyone. You'll get a static shock if you're charged high enough and touch metal, but other items -- you won't get any shock. But what's really happening there? Aren't they acting as resistors but with some dissipation value? Anyway, we need a greater understanding of this phenomena...


People doing electronics cover their tables with medium-high resistivity material mats (high enough so it doesn't interfere with bare electronics, but not completely dielectric). The mats are grounded to Earth ground via 1 megaohm resistor.

From personal experience, static discharge against such material is a lot less painful than touching grounded metal objects.


> An Australian man built up a 40,000-volt charge of static electricity in his clothes as he walked, leaving a trail of scorched carpet and molten plastic and forcing firefighters to evacuate a building.

https://forums.firehouse.com/forum/firefighting/firefighters...


https://en.wikinews.org/wiki/Australian_man_allegedly_ignite...

> Several unanswered objections mark the story as a possible hoax:


1. In winter, take any decent house anywhere with a severe winter climate.

2. Wait until it's -30F outside, open the doors to let that dry air in. Close the doors.

3. Heat the interior to +70F to make --extremely-- dry air.

4. Shuffle across the plastic carpet in leather-soled shoes.

5. Do NOT touch the metal door knobs.


Without meaning to, and without any of that I still managed to destroy a set of dimmer switches with a static shock from my finger, in winter. Boy did I feel stupid.


The fuck?

Like i didn't already have a reason for insisting on natural fibers.




Join us for AI Startup School this June 16-17 in San Francisco!

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: