What Items Are Magnetic Why. Magnetic disks use magnetic particles to store items. Magnetism is the basis for many applications.
If you are lost a compass contains a magnet that can tell you which direction is north. However, that is only partly true because magnets stick to some types of metals, and discovering which metals are magnetic is a learning process. If magnetic fields are invisible, how do we know they are there?
A magnet is a material or object that produces a magnetic field.
Most other metals, for example aluminium, copper and gold, are NOT.
Magnetic beads are easy to use and effective for isolating DNA, RNA, and other biomolecules. Magnetism is the phenomenon that arises from the force between objects that produce fields that attract or repel other objects. This is the currently selected item.