House Umber - Family members are known to be really big and tall, often over 7 feet. Very loyal, feud with the wildlings. House Karstark - Have Stark-blood in their veins, descendants of the Starks of Winterfell. Large in size and hot blooded.
The element Nickel (Ni) is one of the few ferromagnetic metals. Ferromagnetic means they are attracted to magnets and can be magnetized themselves. Most metals arenât magnetic with the exception of iron, nickel, cobalt, gadolinium, neodymium and samarium.
Magnetic materials. Materials exhibiting ferromagnetism. The magnetic properties of all materials make them respond in some way to a magnetic field, but most materials are diamagnetic or paramagnetic and show almost no response.The materials that are most important to magnetic technology are ferromagnetic and ferrimagnetic materials.he quality of magnetic materials is continually being improved by using increasingly pure raw materials (charge materials) and by perfecting production processes (for example, heat-treating the materials in a protective medium and vacuum melting).