2012
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Il y a 14 heures · Earth’s magnetic field is induced by electrical currents flowing in the slowly-moving molten iron core. The convective energy from the molten iron is converted into electrical and magnetic energy in a self-exciting dynamo process. This magnetic field, known as the geomagnetic field, extends out into space forming the Earth’s magnetosphere.
Il y a 2 jours · The event lasted around 440 years. Visualization of Earth's magnetic fields today. An animation using data from the European Space Agency (ESA) allows you to listen to a "sounded visualization" of ...
Il y a 5 jours · electromagnetic field, a property of space caused by the motion of an electric charge. A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.
- The Editors of Encyclopaedia Britannica
Il y a 2 jours · The Laschamp event, which saw Earth's magnetic field dramatically weaken 41,000 years ago, has been captured in an eerie auditory form using Swarm satellite data. Around 41,000 years ago, Earth’s magnetic field briefly reversed during what is known as the Laschamp event. During this period, Earth’s
Il y a 5 jours · Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. The surface of the Sun is a very busy place. It has electrically charged gases that generate areas of powerful magnetic forces.
Il y a 1 jour · The International Geomagnetic Reference Field (IGRF) model is the empirical representation of the Earth's magnetic field recommended for scientific use by a special Working Group of the International Association of Geomagnetism and Aeronomy (IAGA).
Il y a 14 heures · The magnetic Weyl semimetal is one especially interesting example that hosts an interplay between the spontaneous time-reversal symmetry-breaking topology and the external magnetic field. However, it is less known beyond the anomalous Hall effect thereof, which is unable to account for plenty of magnetotransport measurements. We propose a new Hall effect characteristically nonmonotonic with ...
