Friday, September 14, 2012
super conductivity and fluidity.
What is absolute zero? It is the temperature that all movement within an atom ceases. Absolute zero is done by reaching 0 Kelvin or -273.15°C, or -459.67°F. Humans have come within 100 picokelvin to absolute zero. That is 1/100000 of a degree. So can we reach it? The answer is no at this stage, our technology always adds heat to something, like measuring the temp is putting heat in. But what happens if we do? We will start to get characteristics like superconductivity and super fluidity. Super conductivity is when the resistance to current is zero. This can make the thing hover in ways that normal magnets cant, and there is no negative or positive, but another phenomenon is super fluidity. This has been reached with helium at 2.71 kelvin. The helium stops bubbling and now has a viscosity of zero meaning it can drip through solids.
HERE ARE VIDEOS.
Fluidity:http://www.youtube.com/watch?v=2Z6UJbwxBZI
Conductivity:http://www.youtube.com/watch?v=GtRsGcAY26c
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I'm glad that you are interested in the physical properties of matter and not just the chemical properties. Lots of scientists are trying to make room temperature superconductors so that we can make levitating skateboards and stuff like that. Superfluids would be annoying to carry around.
ReplyDeleteGreat Work