The Physics To Go website will be unavailable Friday evening through Saturday afternoon as electrical work occurs in the American Center of Physics server room. Down time will begin at 6PM Eastern Time on Friday. Service is expected to resume by 6PM on Saturday, July 30.

The Real Levitation Feature Summary

Type:
Physics in Your World
Title:
The Real Levitation
Description:
This frog defies gravity with diamagnetic levitation. Many materials that we ordinarily think of as non-magnetic can be manipulated using magnetism.

It's easy to show that grapes are diamagnetic--just see this Exploratorium snack. For an explanation of diamagnetism, see the text at the end of the snack.

You may have seen the Levitron, the spinning and levitating top, in a physics classroom before. Read about how it works here.

(This feature was updated on August 18, 2013.)
Image:
image credit: Andre Geim; <a href="http://www.ru.nl/hfml/research/levitation/diamagnetic/" target="_blank">image source</a>; <a href="http://www.ru.nl/hfml/research/levitation/diamagnetic/" target="_blank">additional image</a>
image credit: Andre Geim; image source; additional image
Image URL:
http://www.compadre.org/Informal/images/features/frog-large.jpg
Featured:
January 16, 2010 - February 1, 2010