Magnetically hard materials are substances that exhibit strong magnetic properties and retain their magnetization even after the external magnetic field is removed. These materials have high coercivity, meaning they resist demagnetization and are often used in permanent magnets. Common examples include alloys like neodymium-iron-boron (NdFeB) and samarium-cobalt (SmCo). Their stability and durability make them essential in various applications, such as motors, generators, and magnetic storage devices.
The Earth's magnetic field is stronger near the middle of the Earth. As you move towards the core, the magnetic field strength increases due to the presence of the dynamo effect generated by the spinning iron core.
Very hard.
Very hard.
as hard as, so hard as, less hard as, more hard as, hard, harder, the hardest.
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The word 'hard' is an adjective (a hard floor, hard water) or an adverb (push hard, work hard), but not a noun.The noun form of the adjective 'hard' is hardness.
As hard as nails (usually about a person) As hard as diamond As hard as rock
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Hard bound
Work hard.
hard working
hard hard