Rocks & Minerals
Science brain teasers require understanding of the physical or biological world and the laws that govern it.
As I wave my hand over this mystery rock, it levitates to my hand. But alas, all that is in my hand is a rod and some copper.
What is going on here?!
Answer
The mystery rock was iron, and the rod and copper form an electromagnet.
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Comments
clhh061504  
Sep 27, 2005
| Good one. |
NTaliesen 
Sep 27, 2005
| Fun science though not especially challenging. Thanks. |
redraptor50 
Sep 28, 2005
| This was good, although a bit too easy, good going and give some more  |
shabz4lyf
Sep 30, 2005
| at first i thought magician then i was like hey wait a minute copper coil magnet??  |
Kal-El
Sep 30, 2005
| I first thought it was a magnet (rod, and the rock would be a magnet). But then I realized it wasnt a trick question and the copper actually has to do with something... Then I got stumped 'cause I always thought copper was for making money.  |
Andreea
Oct 11, 2005
| simple....got it in a second...good one too...   |
twilshire13
Oct 19, 2005
| albeit easy,the wording is confusing.once the magnetic force is great enough to lift the object the two would conjoin immediately.as well,levitation conotates an open hand. |
foreverfree
Oct 25, 2005
| um... i was totally lost...  im not good at science....i guess if you like that kind of stuff it'd be cool... good job anyways... |
sweetmama
Oct 26, 2005
| Pretty easy, but then again I like 'em easy! |
meme2559
Nov 03, 2005
| Very clever! |
Warrior_Poet
Jan 12, 2006
| The problem here comes when I ask where the battery is. I suppose you might have the copper hooked up to a seperate battery, but holding the bare copper wire in your hand while undergoing enough of an electric current to create sufficient EMF to overcome gravity would be... phenomenal. This in itself would be magic. |
AndrewWalker 
Mar 09, 2008
| 1000th teaser! |
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