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.
Nigel Farage (UKIP) Speech on the EU, UK & Mass Immigration 2014 03 08
UKIP Nigel Farage Spring Conference speech - 2014
Red Ice Radio:
Nigel Farage MEP - The State of the EU & The Undemocratic Treaty of Lisbon
Labour wins UK by-election as Ukip trumps Tories
The ruling coalition in the UK was dealt a blow in the latest by-election test, as the UK Independence party pushed the Conservatives and Liberal Democrats into third and fourth ...
Pentagon studying Putin’s body language to predict his behavior 2014 03 07
The Pentagon has spent hundreds of thousands of dollars in recent years so that researchers can study the body movements of foreign leaders, including Russian President Vladimir Putin, in hopes of predicting future behavior.
An article published by USA Today reporter Ray Locker on Thursday and corroborated by documents discovered by RT provides rare insight into a scarcely-discussed military effort that ...
Pentagon Claims That Climate Change ‘Enables Terrorism’ 2014 03 07 In it’s latest Quadrennial Defense Review the Pentagon has said that climate change and ’erratic’ climate will cause increased terrorist activity.
The four yearly reports highlight threats that face civilization and this years homed in on climate change causing an increase in terrorism.
It also mentioned that rises in sea levels and other issues associated with a warming planet will lead ...
Scientists Control Tiny Mechanical Probes Inside Human Cells 2014 03 07 Nanotechnology doesn’t get as much attention these days as genetic and stem cell approaches to medicine, but all three aim to target the causes of illness with greater precision and less collateral damage in the rest of the body than conventional approaches.
Nanotech breakthroughs have come more slowly than many had hoped, but a recent success shows progress toward the goal ...
Fukushima: The Ticking Nuclear Bomb. Over 800 Tons of Radioactive Material Pouring into Pacific Ocean 2014 03 07
First published by GR in October 2013
In August this column ran a piece claiming that the Pacific Ocean was being poisoned by radioactive material escaping from Fukushima, two years after the devastating tsunami and meltdown at the Japanese nuclear facility. Three months later, shocking evidence points towards a calamity situation.
Silence from the corporate media.
There is growing evidence coming from ...