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Because of its use as a navigation tool, the study of the magnetic field has a very long history, and probably goes back to the 12 C when it was first exploited by the Chinese. It was not until 1600 that Gilbert postulated that the Earth is, in fact, a gigantic magnet.
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.
Earth’s magnetic field, a complex and dynamic phenomenon, plays a fundamental role in shielding our planet and guiding navigation. The ongoing study of this field, from its deep-seated origin to its far-reaching effects in space, remains a pivotal focus of Earth science.
In electromagnetism, the magnetic moment or magnetic dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic field. The magnetic dipole moment of an object determines the magnitude of torque the object experiences in a given magnetic field.
The purposes of this review are (1) to provide an overview of the magnetospheric system (i.e., its subsystems and how the subsystems interact), to show how the system is driven by the solar wind, and how it reacts to the driving; (2) to describe the various phenomena that collectively make up magnetospheric activity; (3) to assess the system pro...
A common laboratory procedure for the determination of the magnetic moment for a complex is the Gouy method which involves weighing a sample of the complex in the presence and absence of a magnetic field and observing the difference in weight.
The magnetic field magnitude measured at the surface of the Earth is about half a Gauss and dips toward the Earth in the northern hemisphere. The magnitude varies over the surface of the Earth in the range 0.3 to 0.6 Gauss.
