Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementar
The shape of a bar magnet's magnetic field is revealed by the orientation of iron filings sprinkled on the table around it.
An illustration from Gilbert's 1600 De Magnete showing one of the earliest methods of making a magnet. A blacksmith holds a piece of red-hot iron in a north–south direction and hammers it as it cools. The magnetic field of the Earth aligns the domains, leaving the iron a weak magnet.
Drawing of a medical treatment using magnetic brushes. Charles Jacque 1843, France.
A live frog levitates inside a 32 mm diameter vertical bore of a Bitter solenoid in a very strong magnetic field—about 16 teslas
A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another
Microcrystalline grains within a piece of Nd2Fe14B (the alloy used in neodymium magnets) with magnetic domains made visible with a Kerr microscope. The domains are the light and dark stripes visible within the many grains shown here. The outlined grain has its magnetocrystalline axis almost vertical, so the domains are seen end-on.
Domain structure of a shape-memory alloy (recorded using CMOS-MagView)
Domain structure of an exemplary meander domain (recorded using CMOS-MagView)
Domain structure of an exemplary magnetic bubble domain (recorded using CMOS-MagView)