image credit: Andre Geim; image source; additional image
The Real Levitation
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.)
Login to Comment on this Item
Exploratorium: Snacks about Magnetism
Try any of these experiments from the Exploratorium to learn more about magnetism. Many of them use household items; some equipment may be more difficult to find. Have an adult help you.
You might also want to try making a ferrofluid like the ones in the From Physics Research feature above. Again, get help from an adult.