'(<a href="http://www.j-archive.com/media/2008-04-01_DJ_10.wmv">Jon  of the Clue Crew reports from the lab, where he rolls a coin down an inclined plane.</a>)  Inside vending machines, magnets pick up steel slugs, but U.S. coins go right in, because they're minted from non-magnetic mixed metals, known as these'
alloys
SCIENCE STUFF: Inside vending machines, magnets pick up steel slugs, but U.S. coins go right in, because theyre minted from non-magnetic mixed metals, known as these
Inside vending machines, magnets pick up steel slugs, but U.S. coins go right in, because they're minted from non-magnetic mixed metals, known as these
Inside vending machines, magnets pick up steel slugs, but U.S. coins go right in, because they're minted from non-magnetic mixed metals, known as these
SCIENCE STUFF
alloys
SCIENCE STUFF