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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

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Superconductor Magnetic Levitation
Videos for Engineers

Superconductor Magnetic Levitation - RF Cafe Video for EngineersWe have been treated to videos of superconductor levitation for many years, so watching a super-cooled object float above a magnet is nothing new. The novel factor in this demonstration is an effect called quantum flux tube formation (Trekkies must love that term) where the properties of the superconductor are such that rather than completely repelling the magnetic filed, which is the norm for superconductors, portals are created through the material where flux line clusters actually retain the puck. In the other demos, you see a small puck levitating over a large magnet. Here, it is the opposite. Rather than being constrained by the magnetic wrapping around the perimeter of the puck and pretty much locking it in place, this structure allows the supercooled puck to move around within the field. It can run along a track impeded only by air resistance. Another unique result of the quantum flux tubes is that not only can the puck float above the magnet, but it can also be suspended beneath the magnet.

The video and research was done by the superconductivity group at Tel Aviv University.

Videos for Engineers - RF CafeThis collection of video and a few audio files represents files that have been featured on the RF Cafe homepage. Every week or so a new file is added that should be of interest to RF Cafe visitors.

All Videos for Engineers archive pages:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 16 | 17 | 18 |19 | 20 | 21 | 22 | 23 | 24 | 25 |

Please send me an e-mail if you have a good subject. Note: "Videos for Engineers" formerly went by the name "Cool Videos."



Posted October 25, 2011