Boaz Almog "levitates" a superconductor
http://www.ted.com How can a super-thin, three-inch disk levitate something 70000 times its own weight? In a riveting, futuristic demonstration, Boaz Almog ...
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Translator: Morton Bast Reviewer: Thu-Huong Ha The phenomenon you saw here for a brief moment is called quantum levitation and quantum locking. And the object that was levitating here is called a superconductor. Superconductivity is a quantum state of matter, and it occurs only below a certain critical temperature. Now, it's quite an old phenomenon; it was discovered 100 years ago. However, only recently, due to several technological advancements, we are now able to demonstrate to you quantum levitation and quantum locking. So, a superconductor is defined by two properties. The first is zero electrical resistance, and the second is the expulsion of a magnetic field from the interior of the superconductor. That sounds complicated, right? But what is electrical resistance? So, el...
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Translator: Morton Bast Reviewer: Thu-Huong Ha The phenomenon you saw here for a brief moment is called quantum levitation and quantum locking. And the object that was levitating here is called a superconductor. Superconductivity is a quantum state of matter, and it occurs only below a certain critical temperature. Now, it's quite an old phenomenon; it was discovered 100 years ago. However, only recently, due to several technological advancements, we are now able to demonstrate to you quantum levitation and quantum locking. So, a superconductor is defined by two properties. The first is zero electrical resistance, and the second is the expulsion of a magnetic field from the interior of the superconductor. That sounds complicated, right? But what is electrical resistance? So, el...
