[Hazaanko]

Careful man.  Someone mentions God, trolls come out of the woodwork, someone gets offended, and before you know it - people start getting their eyes poked out and kittens start dying.  KITTENS START DYING.  Total chaos and madness ensue.

[karajorma]

Alright, back on topic.

[Mika]

another cool chemistry oddity is the so-called "Water Bridge," formed by subjecting pure, deionized water to extremely high voltage:

http://www.physorg.com/news110191847.html

Ah, something everyday related from the basic research. Nice to see things like these researched and published for a chance. It is an interesting phenomenom, I would like to know about the voltages they are putting on it.

Coming next: how much similarities are there between this effect and the liquid nitrogen property of climbing up from a container?

Mika

[karajorma]

I've not heard of nitrogen doing it. Do you mean helium?

[Bob-san]

another cool chemistry oddity is the so-called "Water Bridge," formed by subjecting pure, deionized water to extremely high voltage:

http://www.physorg.com/news110191847.html

Ah, something everyday related from the basic research. Nice to see things like these researched and published for a chance. It is an interesting phenomenom, I would like to know about the voltages they are putting on it.

Coming next: how much similarities are there between this effect and the liquid nitrogen property of climbing up from a container?

Mikaz

If you mean surface-tension, I'm not even sure of the properties of Liquid N₂. If it did that on any scale such as this--that N would evaporate when exposed to room temperatures, not to mention when heated by DC. Besides--why would computer enthusists use litres of N₂ without it climbing out and freezing their hands?

[Mika]

Sorry, that should have read "Helium" rather than "Nitrogen". 5 years of Industrial Optics makes one a dull boy in Quantum Mechanics.

I meant that the phenomena have similar qualities, not that they are caused by the same reason. It will be interesting to hear if they find any parallels between them.

Mika

[G0atmaster]

I heard of a guy trying to cool his highly overclocked computer with LHe2.  He was scared about bringing electronics that close to Absolute Zero.  But everyone told him it'd be ok, so I think he went through with it.

[Tyrian]

I heard of a guy trying to cool his highly overclocked computer with LHe2.  He was scared about bringing electronics that close to Absolute Zero.  But everyone told him it'd be ok, so I think he went through with it.

I remember seeing the video of that.  He pushed the system past 5.5Ghz, I *think.*  I'll see if I can find it.

EDIT:  Here it is.

[G0atmaster]

No, that one's Liquid Nitrogen.  LHe2 is Liquid Helium.  FAR colder.  Like, the coldest we've ever gotten in cryogenics cold.

[Nuke]

is liquid nitrogen conductive? meaning would a full system immersion be possible?

[karajorma]

Liquid nitrogen is no doubt a very good insulator. The problem is that unless you do a good job sealing your container it slowly condenses oxygen out of the air since the boiling point of nitrogen is lower than that of oxygen.

Once the concentration of oxygen gets high enough you have a serious fire/explosion hazard on your hands.


And that's before we consider water condensing out of the air. But I prefer to mention the danger that gives you a nice big bang first.

[G0atmaster]

Plus, all that cold would turn your PCBs and ICs to glass.  Not literally, but they'd be very ready to shatter.  The plastic and such.

One modding group tried to run Fluorinert through pipes dipped in LN2, and then into a tank containing their computer, but the Fluorinert wound up turning to gel.