GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Testing for magnetic properties, Photo 1 of 2. A bar ALNICO magnet is used to test iron shavings (Photo 1) and sand (Photo 2) for magnetic properties. Iron is magnetic and is attracted to the magnet. Sand is non-magnetic and is not attracted to the magnet. Photo 1 of 2.
Model release not required. Property release not required.