Magnetic polarity is determined by the Earth’s magnetic field, which creates the North and South Poles. The field flows through the planet’s axis and encircles the Earth. Bar magnets can demonstrate magnetic polarity, and compasses align with the North Pole.
Magnetic polarity describes the magnetic field around almost all magnetic objects. Almost every magnet has a north and south pole that are oriented with the earth’s magnetic field. The magnetic field surrounding the Earth is one of the largest known to man. The energy surrounding the planet follows a distinct path that creates two major magnetically attractive points, which are the North Pole and the South Pole, or the Arctic and the Antarctic. The magnetic polarity of nearly all other magnetic objects on Earth is determined by this global magnetic field. Without it, there probably wouldn’t be any magnetic objects on the planet.
When tracking the Earth’s magnetic field, it is relatively easy to track the magnetic polarity. The magnetic energy source flows straight through the axis of the planet. As this straight line exits the northern point of the axis, it splits into two lines of energy that bend downward to encircle the eastern and western hemispheres of the earth. These two lines then meet at the southern point of the axis and return to the Earth’s core. The two points where magnetic energy exits and enters the Earth are the two magnetic poles. This is what creates the magnetic field around the entire planet.
A microcosm of this magnetic field can be seen with most ordinary magnets. To examine magnetic polarity on a small scale, the experimenter generally requires two dipole bar magnets, which are simply magnets with a north and a south pole. Magnets with marked poles generally work best. The experimenter should rest one of the bar magnets vertically on a flat surface with the south pole closest to him or her. He or she should then try pushing the two south poles of the magnets together, noting how they repel each other. This happens because the south poles of the magnets are both attracting energy and cannot stick together.
The north poles should also be pushing each other because both are pushing energy outward. The magnetic polarity in bar magnets works this way because they are oriented with the poles of the Earth. It’s not clear why magnetism occurs in some substances and not others, but when it does occur, the magnets always align with the planet’s magnetic field. An example of this can also be seen in compasses because they are designed to align with the North Pole. Regardless of which direction the mount is facing, the needle on a good working compass should always point north.
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