Protected By Science My hand is like a red-hot poker to the liquid nitrogen, but an insulating layer of nitrogen gas forms- a phenomenon known as the Leiden-frost effect- keeping my hand safe and warm for a fraction of a second. Mike Walker
When I first saw this photograph of a man’s hand submerged in liquid nitrogen at somewhere below -320° F, my immediate thought was, “That guy must be crazy! One second in that stuff, and you’re shopping for new skin!” My shock was tempered only slightly by the fact that it was my hand, and we’d taken the picture just a minute earlier.
I hadn’t realized that my hand was quite so deep into the liquid. Amazingly, I barely felt the cold at all. My skin didn’t get hurt for the same reason that water droplets dance on a hot skillet. An insulating layer of steam forms almost instantly between the water and the metal, keeping the droplets relatively cool as they float for several seconds without actually touching the hot surface. To liquid nitrogen, flesh is like that skillet—a surface hundreds of degrees above its boiling point. So the moment my hand touched the liquid, it created a protective layer of evaporated nitrogen gas, just as the skillet created a layer of steam. That gave me just enough time to put my hand in and pull it out again. Any longer than that, and frostbite would have set in.
Hot Water: Droplets on a very hot skillet take longer to evaporate than they would on a less-hot surface where no insulating gas layer forms. Mike Walker
The phenomenon is called the Leidenfrost effect (after Johann Gottlob Leidenfrost, the doctor who first studied it in 1756). I’d known about it for years, but when it came time to test it in real life, I have to admit that I used my left hand, the one I’d miss less.
I drew the line at another classic example of the effect. According to the books, it’s possible to stick a damp finger directly into molten lead without getting burned, if you do it fast enough. After some consideration, and remembering the times I’ve been burned by molten lead, I decided that it probably wouldn’t make a very good picture anyway.
ACHTUNG! Do not try this. If liquid nitrogen soaks into your clothes, you will not be protected by the Leidenfrost effect, and you can get frostbite very quickly.
No Bank Deposits Will Be Spared from Confiscation 2013 05 18
As alert Zero Hedge readers are aware, this week the EURO Politburo is busy debating the dodgy subject of deposit "bail-ins."
The following article very succinctly explains this odious mode of fractal fractional reserve end-game chicanery.
The author encourages all of you to share it with others.
NO BANK DEPOSITS WILL BE SPARED FROM CONFISCATION
By Matthias Chang Esq, futurefastforward.com (with author’s permission)
I challenge ...
Big Bang: Biggest meteorite explosion rocks the Moon 2013 05 17
NASA scientists have recorded the biggest ever meteorite impact on the Moon, with an explosion equal to 5 tons of TNT. The event is part of ‘lunar meteor showers’ observed by astronauts of the Moon exploration program.
The 40-kg meteorite measuring 0.3 to 0.4 meters wide traveling 56,000 mph slammed through the Moon’s surface on March 17, 2013.
The explosion from the ...
Military Says No Presidential Authorization Needed To Quell “Civil Disturbances” 2013 05 17 A recent Department of Defense instruction alters the US code applying to the military’s involvement in domestic law enforcement by allowing US troops to quell “civil disturbances” domestically without any Presidential authorization, greasing the skids for a de facto military coup in America along with the wholesale abolition of Posse Comitatus.
The instruction (embedded at the end of this article), which ...
Ancient Maya Pyramid Destroyed in Belize 2013 05 17 An archaeological group says it plans to take legal action.
Despite its small size, the Caribbean country of Belize is known for a few outstanding characteristics: a spectacular barrier reef, a teeming rain forest, and extensive Maya ruins.
It now has one fewer of those ruins.
A construction company in Belize has been scooping stone out of the major pyramid at the site ...
Ginger: A Warming Herb 2013 05 17
Ginger is an Asian herb that is particularly well known to us in the West. Over time, and with trial and error, its stimulating properties and piquant flavor have been integrated into both our herbal “materia medica” and cuisine.
Brewed as an herbal tea, ginger root is particularly helpful for those people who have underactive stomachs and difficulty producing adequate amounts ...