[Beowulf] Newbie Question: Racks versus boxes and good rack solutions for commodity hardware

arjuna brahmaforces at gmail.com
Sun Dec 14 21:51:10 PST 2008


I value life too much to want to go that way just yet! However I do know
what a conductor is, i was just trying to figure out what that metallic
looking plate in the tower case was that housed the motherboards etc and was
not a conductor...?

On Mon, Dec 15, 2008 at 10:00 AM, Robert G. Brown <rgb at phy.duke.edu> wrote:

> On Sun, 14 Dec 2008, Geoff Jacobs wrote:
>  Yes, it is possible to kill yourself with low voltage. You have to
>> really work at it and/or be unlucky, but it can be done. A DC resistance
>> from leg to arm of 100 ohms or so is hard to achieve. Stabbing oneself
>> with electrified needles, for starters.
> As in:
>  http://www.darwinawards.com/darwin/darwin1999-50.html
> Improving the human race one incident at a time...
> There was also the joy of touching a 9V battery across the tip of your
> tongue (safe enough, but more than enough to convince you that 9V can
> make you go "Ow").  Or the dangers of 12V batteries in a saltwater
> environment or even when it is raining and your hands are wet and your
> skin is maybe a bit split when you grab one by the posts.
> As I said, do NOT mess with even "low" voltage electricity unless you
> know things like what a conductor is, or you too might qualify for a
> Darwin!  And we'd hate that...:-)
>   rgb
> Robert G. Brown                        http://www.phy.duke.edu/~rgb/<http://www.phy.duke.edu/%7Ergb/>
> Duke University Dept. of Physics, Box 90305
> Durham, N.C. 27708-0305
> Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu<email%3Argb at phy.duke.edu>

Best regards,
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