A magnetic shield or screen protects a delicate instrument from external magnetic fields. The shield should be made of a material with high magnetic permeability to be effective, which means it can conduct magnetic fields effectively and redirect them away from the protected instrument. The most common materials used for magnetic shielding are ferromagnetic materials,… Read More
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Magnets are objects that have a magnetic field and can attract or repel other magnets. They can be found in many everyday items, such as compasses, televisions, computers and cell phones. Magnets come in different sizes and shapes depending on their purpose. The most common type is the permanent magnet which has a strong magnetic… Read More
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Perpendicular Magnetic Recording (PMR) is a type of hard disk recording technology that was developed in the mid-1990s. It replaced the older longitudinal magnetic recording method, and has since become the most common form of data storage on modern hard drives. PMR works by storing information on a thin layer of magnetically charged particles arranged… Read More
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Shingled Magnetic Recording (SMR) is a data storage technology that has been gaining popularity in recent years. It uses an overlapping pattern of tracks on the disk to increase the amount of data stored per unit area, which helps reduce costs and improve performance. SMR works by writing new bits on top of existing ones,… Read More
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A magnetic field is a force that can attract or repel objects. It is created by the movement of electrons. The strength of the magnetic field depends on the number of moving electrons and their speed. Magnetic fields are used in many everyday applications, such as in magnets, motors, and generators. They can also be… Read More
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