Why does an aluminium ring hover above an alternating electromagnet?

Subject: Why does an aluminium ring hover above an alternating electromagnet?

Date: Sat Nov 20 05:17:32 1999
Posted by John Furneaux
Grade level: 10-12 School: Colyton Grammar School
City: Colyton State/Province: Devon Country: England
Area of science: Physics
ID: 943093052.Ph

Message:


If you put an aluminium ring on a pole with an alternating electromagnet 
at the bottom, it hovers above it. Why?

Re: Why does an aluminium ring hover above an alternating electromagnet?

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