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Ring magnets Most hard disk drives incorporate strong magnets This manually-powered flashlight uses a neodymium magnet to generate electricity Neodymium magnets have replaced alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the ...
The magnetic moment of an object is an intrinsic property and does not change with distance, and thus can be used to measure "how strong" a magnet is. For example, Earth possesses an enormous magnetic moment, however we are very distant from its center and experience only a tiny magnetic flux density (measured in tesla ) on its surface.
The International Magnet Association (IMA) is the old Magnetic Materials Producers Association (MMPA)and they have adopted the MMPA standards and definitions. Usually a higher grade is stronger, but one vendor's strong N38 may be another vendor's weak N40.
Sun Yuan and Peng Yu are an artistic duo that began making non-normative and unconventional art in the 2000s. [6] Sun Yuan was born in Beijing, China in 1972 and Peng Yu was born in Heilongjiang, China in 1974. [7] The pair first met each other while attending at the Central Academy of Fine Arts in Beijing where they both studied oil painting. [4]
Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.
The NFL's playoff picture will be set in stone by the end of the day on Sunday. Here's a look at how the NFL playoff bracket looks in Week 18.