The theoretical device employs Mercury rotating in a superconductive ring to create a Gravitomagnetic field to overcome Earth’s gravity. Earth's magnetism is generated by the planet's churning hot, liquid-iron core via a mechanism called a magnetic dynamo. This comparatively low field strength presents a number of challenges, both theoretically to understand how it is generated and observationally to distinguish the internal field from that due to the solar wind interaction. On 14 January 2008, the Messenger spacecraft flew by the innermost planet of the solar system, Mercury. Mercury has possessed a magnetic field for billions of years, and that field may have once been as strong as the Earth's, researchers say. This is a preview of subscription content, log in to check access. The magnetic field strength of Mercury at the planet’s surface is approximately 1% that of Earth’s surface field.
This field, along with the planet's high density and small size relative to the Earth, indicates that it probably has a molten iron core.
At room temperature, the element mercury is not very magnetic at all.
It has a very small, negative magnetic susceptibility, meaning that when you put mercury in a magnetic field, it magnetizes just a little tiny bit in the opposite direction. The magnetic field strength of Mercury at the planet’s surface is approximately 1% that of Earth’s surface field. Sure enough, Mercury's magnetic field strength had diminished since 1974, right in line with the predicted value of the creation magnetic field model. Mercury’s magnetic field is thought to operate in the much same way; however, the field is weaker than that of Earth.
Near the end of its mission, the MESSENGER spacecraft revealed Mercury's magnetic field to be at least 3.7 to 3.9 billion years old, or older. The magnetic field strength of Mercury at the planet’s surface is approximately 1% that of Earth’s surface field.
We say that mercury is a weakly diamagnetic substance at room temperature. NASA'S SCIENTIFIC VISUALIZATION STUDIO. Messenger at Mercury. close Data from Mariner 10 led to its discovery in 1974; the spacecraft measured the field's strength as 1.1% that of Earth's magnetic field. Mercury's magnetic field is approximately a magnetic dipole (meaning the field has only two magnetic poles) apparently global, on planet Mercury. Planetary magnetic fields are generated by flows in the hot, liquid iron cores of the planets.Measurements made by Mariner 10 in 1974/75 showed that Mercury also has a magnetic field. The magnetic field has two poles, and is tilted in the same direction as Mercury… Credit: NASA Magnetic Fields: Much like Earth, Mercury has a significant, and apparently global, magnetic field, one which is about 1.1% the strength of Earth’s. Mercury is the only inner planet other than the Earth that has a significant magnetic field (220 nT).
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