chilling tablets

BigMark · Post by **BigMark** » Tue Feb 19, 2008 3:00 pm

Well, I'd say that if they even tried, your core temp would drop down too far and you'd slowly start to die unless they just needed to do it for a quick time.. plus you'd have to match your environments temperature, 10 human shaped objects at 60F on a background of 70F forest would show up, and that's not putting them on sand where they have nothing to break up their pattern.

buttnut · Post by **buttnut** » Tue Feb 19, 2008 10:05 pm

Big Galloot wrote:We need to spend a little time reviewing the Laws of Thermodynamics.

1. Entropy demands that any chemical reaction must produce heat, so a pill cannot "make" cold by a chemical reaction.

2. Any miniaturized refrigeration device would need a means of shedding the heat drawn out of the drink. Because, the device would be immersed in the drink, the only choice would be to "store" the heat internally. This is not possible at our current level of technology. When it does become available, they are not likely to use it to cool drinks.

3. It is possible to make a pill of dense material cold enough to chill a drink, say by cooling a nickel-silver tablet in liquid nitrogen and immediately immersing it in the drink, but it would be an order of magnitude more efficient to use the liquid nitrogen to make ice which has a higher specific heat capacity than any non-poisonous alternative. And ice is easier to carry around than liquid nitrogen.

4. Last, but not least, the time required to cool a drink would be a direct function of the available surface area cooling it. It would take hours for an aspirin sized tablet to chill a drink.

I choose to remain skeptical.

Looks like we found the nerd amongst us.

C-rats · Post by **C-rats** » Sun Mar 02, 2008 9:54 pm

Grrrrrrrrrrr...... Major coordination problems here between my brain/fingers/ & computer keyboard.

Back to square one again......

C-rats · Post by **C-rats** » Sun Mar 02, 2008 9:58 pm

Baldy wrote:If this technology exists, surely they should use it to make troops invisible to thermal imaging equipment?

Baldy?..... Baldy!? ......Where'd you go???

(There! `mo better!)

Baldy · Post by **Baldy** » Thu Mar 13, 2008 12:57 pm

I'm here, C-rats; I just lapsed into a coma after a series of experiments involving a stack of extra-kool mints and wintergreen gum.

Anyway, where I come from 'chilling tablets' are those small ones that sleazy-looking guys try to sell you in nightclubs.

ovationman · Post by **ovationman** » Thu Mar 13, 2008 8:29 pm

Seems like BS to me. Now I have heard stories from guys in Iraq about Iraqis seeming to think that the U.S do have some sort of "cool pill". This however to the best of my knowledge is untrue. Heat casualties are an ever present issue with people there.