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Magnetic pole definition of Square magnet

Publish Time: 2024-05-08
Square magnet, as a common permanent magnet, has unique magnetic properties. Among them, the magnetic pole is the key to understanding its magnetism.

First, we need to clarify what magnetic poles are. The magnetic poles, simply put, are the two areas of the magnet with the strongest magnetism. In a Square magnet, these two areas are located at both ends of the magnet, which we call the "North Pole" (N pole) and the "South Pole" (S pole). These two magnetic poles have the strongest magnetism. The magnetic field lines between them start from the N pole, pass through the inside of the magnet, and finally return to the S pole, forming a complete closed loop.

So, how to determine the magnetic poles of a Square magnet? Usually, we can verify it through a small experiment. Hang the Square magnet freely on the thin wire. When the magnet is stationary, the end pointing north is the North Pole (N pole), and the end pointing south is the South Pole (S pole). This is because the earth itself is a large magnet, with its magnetic north pole near the geographical south pole and its geomagnetic south pole near the geographical north pole. So, when the Square magnet hangs freely, it interacts with the Earth's magnetic field so that its N pole points to the geographical North Pole and its S pole points to the geographical South Pole.

In addition, we can also determine the magnetic poles of the Square magnet by using a compass or other magnetic detection tools. When a compass is brought close to a magnet, its pointer is deflected by the magnetic field of the magnet. According to the deflection direction of the compass, we can determine the N pole and S pole of the magnet.

To sum up, the magnetic poles of a Square magnet are defined by its two strongest magnetic areas, and we can determine its magnetic poles through simple experiments or using magnetic detection tools.
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