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A levitating magnet over a superconductor

Levitating Trains

... different range of material forms, each of which has its own benefits for a specific type of application. Ginny -   ... -   I'm from Cambridge.  I think you almost solved your own question about how you might do levitating trains because ...

liquid nitrogen

Boom! The Naked Scientists

... a first. Dave - This is a balloon I blew up with just my own breath earlier. You'll notice something happening to it. ...