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Boaz Almog: The levitating superconductor

Boaz Almog · TED · 3 HN points · 2 HN comments
HN Theater has aggregated all Hacker News stories and comments that mention Boaz Almog's video "Boaz Almog: The levitating superconductor".
TED Summary
How can a super-thin 3-inch disk levitate something 70,000 times its own weight? In a riveting demonstration, Boaz Almog shows how a phenomenon known as quantum locking allows a superconductor disk to float over a magnetic rail -- completely frictionlessly and with zero energy loss. Experiment: Prof. Guy Deutscher, Mishael Azoulay, Boaz Almog, of the High Tc Superconductivity Group, School of Physics and Astronomy, Tel Aviv University.
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> The problem is, there's no friction (as the article states) for the board.

Where'd you read that? All I read was that they are working on a friction-free car.

It uses super-conductivity to facilitate levitation. Flux pinning creates an 'on-rails' movement between the two components (the superconductor and the magnetics on the ground).

Defects in the magnets and gaps would create areas of resistance, much like they do in toy-scale versions of this same concept, but you'll still be pinned to the magnetics as long as that superconductor stays cold.

There will be no 'astronaut-in-space' movement, because the board will only be able to achieve quantum levitation over a bed of magnetics, which will be many pieces and not defect-free.

http://quantumlevitation.com/the-physics/

http://www.ted.com/talks/boaz_almog_levitates_a_superconduct...

Oct 20, 2014 · 1 points, 0 comments · submitted by oAlbe
Feb 04, 2014 · 1 points, 0 comments · submitted by usaphp
Can the hyperloop be combined with quantum levitation? To provide very low friction high speed travel? http://www.ted.com/talks/boaz_almog_levitates_a_superconduct...
Taek
I think the problem with that idea is you have to keep the superconductor very cold, which might be too expensive for large objects that need to levitate for 30 minutes.
Jul 03, 2012 · 1 points, 0 comments · submitted by QuarkSpark
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