Alain wrote:
> Orchid XP v7 nous apporta ses lumieres en ce 2007/11/10 04:19:
>> Nicolas Alvarez wrote:
>>
>>> I read on a website about an interesting CPU watercooling technique: 
>>> submerging the motherboard. They still had trouble because of ions on 
>>> the water. It's hard to get *totally* pure water...
>>
>> We have a machine at work that produces "20 mega-Ohm water".
>>
>> Of course, water reacts with *air* to absorb various ions. (For 
>> example, CO2 disolves in water to yield carbonic acid.)
>>
>> But seriously - computers work at 12V. The water's resistance would 
>> have to plummet to yield any meaningful current.
>>
>> I would imagine a far bigger problem is water's viscosity; I'd think 
>> fans wouldn't like that...
> Main power is 5V for all the electronics. The 12V is for the fans and 
> drives motors.
> 
> A good deal of the currents are counted in miliamps or less. In 
> particular, the data transmition use very low curents at 5V. A leak of 
> less than a 1 miliamp can easily cause malfunctions. And then, those 12V 
> going to various motors can push or pull some curents into the data and 
> address paths...

My point was more that at a mere 12V, the resistance has to drop *very* 
low indeed for any noticable current to happen. (Ohm's law, and all that...)

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