MOSEM² Möbius Maglev Train at Science Teaching Conference in Oslo

Simplciatus Research and Development presented a Möbius-shaped magnetic track for superconducting maglev trains at Naturfagkonferansen 2011. Photo courtesy of SRD.

On Thursday 20 and Friday 21 October the Möbius maglev train track was displayed all day at the University of Oslo Blindern campus, Georg Sverdrup building (University Library).Naturfagkonferansen Oslo

Our exhibit was included in the annual national science teaching conference (“Naturfagkonferansen”) along with other exhibits, workshops and lectures on teaching and learning in physics, chemistry, biology and other sciences. Tekna and Utdanningsforbundet mentioned our participation.

It was a popular feature of the conference, and most participants plus several university students on their way to or from the library watched our demonstrations.

In addition to the Möbius maglev train track itself, we also presented Meissner Effect and flux pinning levitation of superconducting pellets with different sizes.

Superstrong magnet above superconductor in an insulating dish filled with liquid nitrogen in order to cool down the superconductor so that the magnet can levitate above. Photo  SRD.

Superstrong magnet above superconductor in an insulating dish filled with liquid nitrogen in order to cool down the superconductor so that the magnet can levitate above using the phenomenon of flux pinning (gripping or locking in the magnetic field). Photo courtesy of SRD.

We were able to run the largest train at high speed around the track up to 8 times before the superconductor heated up above the critical temperature and lost grip of the magnetic field from the track. That equals around 50 meters in total, half of the distance upside down or vertically suspended on the outside surface of the track. No other superconducting or conventional maglev trains can do this, only those using flux pinning (also called quantum locking).

When the superconductor heats up it loses grip of the magnetic field from the track. This results in the immediate departure of the train from the track. We had soft mats on the marble floor to protect the superconductor inside the train. Most things become brittle at minus 200 degrees, and the superconductor is a special kind of ceramic. Try deep freezing your coffee cup and then throwing it on a stone floor…

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The article was written on 2011-09-26, in the category Arrangementer.

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