What are the trends in increasing the storage density of magnetic hard drives?

Magnetic materials are always attracted towards a magnet. However, a magnet may be attracted to or repelled from another magnet. We've only really learned how magnetism works in the last century, since the world inside atoms was first discovered and explored. What is magnetic north - and why is it different to true north? True north is a fixed point on the globe. Magnetic north is quite different. Magnetic north is ... The MagLab is the largest and highest powered magnet lab in the world, offering scientists free access to unique instruments and expertise to help advance ... Mar 9, 2011 ... ... magnetism: ferromagnetism, ferrimagnetism, etc. The difference ... magnetism (meaning objects that are permanently magnetized). The ... What is an electromagnetic interference? Electromagnetic interference (EMI) is unwanted noise or interference in an electrical path or circuit caused by an ... Research studies do not conclusively support the use of static magnets for pain relief. There is some evidence that electromagnetic therapy may be helpful for ... Magnets can also attract each other, but only if they face in opposite directions. A magnet has two ends called poles; one end is the north pole and the other ... The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, ... Jul 2, 2016 ... This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic effects and phenomena associated with spin- ...