49.9 MB (1.0 MB compressed)
3402 x 5130 pixels
28.7 x 43.4 cm ⏐ 11.3 x 17.1 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
A horseshoe magnet is used to test iron and iron(II) sulfate heptahydrate (FeSO4 7H2O) for magnetism. Iron is magnetic while iron sulfate is not.
Model release not required. Property release not required.