Floating Magnet
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Poster frame from video: In most browsers, Click on image to play OR Right-click on image and "save target as" to your computer, then play in QuickTime, Windows Media Player, or another player. |
Awhina mentors enjoy the levitating magnet |
| Abstract | A magnet floats above a superconductor. |
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| Portable | Yes | ||
| Principles Illustrated | Meissner Effect (expulsion of magnetic field by a superconductor). |
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| NCEA & Science Curriculum |
PHYS 3.6
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| Teacher Guide |
Would you like to contribute lesson suggestions? Contact us. |
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| Video |
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| Instructions | Cool a superconducting disk with liquid nitrogen and lower the magnet over the superconductor. Alternatively, put the magnet on top of the warm superconductor and cool. The magnet will pop up. |
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| Safety |
Wear liquid nitrogen safety gear and use plastic forceps to handle the magnet. Only a few ml of liquid nitrogen are needed to cool the superconductor.
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| Related Resources | |||
| References | Our superconductor was made in a research lab, but similar materials and instructions can be obtained from http://www.futurescience.com/sc.html or from Colorado Superconductor PIRA 5G.50.50 |
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| Credits |
This teaching resource was developed with support from |
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The superconducting disk shown in the video was made at Industrial Research Limited in New Zealand. |
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| Copyright |