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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.
The strongest continuous magnetic fields on Earth have been produced by Bitter magnets. The strongest continuous field achieved solely with a resistive magnet is 41.5 tesla as of 22 August 2017 [update] , produced by a Bitter electromagnet at the National High Magnetic Field Laboratory in Tallahassee , Florida .
Science studies such phenomena with the field of heliophysics, which is an interdisciplinary combination of solar physics and planetary science. In the Solar System , the Sun can produce intense geomagnetic and energetic particle storms capable of causing severe damage to technology.
These magnetic fields are a hundred million times stronger than any man-made magnet, [11] and about a trillion times more powerful than the field surrounding Earth. [12] Earth has a geomagnetic field of 30–60 microteslas, and a neodymium-based, rare-earth magnet has a field of about 1.25 tesla, with a magnetic energy density of 4.0 × 10 5 J ...
At low latitudes, the magnetic field lines are pushed inward. At high latitudes, the magnetic field lines are pushed backwards and over the polar regions. The boundary between the region dominated by the planet's magnetic field (i.e., the magnetosphere) and the plasma in the interplanetary medium is the magnetopause. The configuration ...
The magnetic field of Mars is the magnetic field generated from Mars's interior. Today, Mars does not have a global magnetic field. However, Mars did power an early dynamo that produced a strong magnetic field 4 billion years ago, comparable to Earth's present surface field. After the early dynamo ceased, a weak late dynamo was reactivated (or ...
Earth's magnetic field at 0° latitude (on the equator) 58 μT: 580 mG: Earth's magnetic field at 50° latitude: 10 −4 T 100 μT: 1 G: Magnetic flux density that will induce an electromotive force of 10 −8 volts in each centimeter of a wire moving perpendicularly at 1 centimeter / second by definition (1 gauss = 1 maxwell ...
The magnetic field strength at Saturn's equator is about 21 μT (0.21 G), which corresponds to a dipole magnetic moment of about 4.6 × 10 18 T•m 3. [2] This makes Saturn's magnetic field slightly weaker than Earth's; however, its magnetic moment is about 580 times larger. [1]