Researchers reveal model of Sun’s magnetic field
University of Leeds | eScience Researchers at the Universities of Leeds and Chicago have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun. Scientists have known since the 18th Century that the Sun regularly oscillates between periods of high and low solar activity in an 11-year cycle, [...]
Read More →Moon Once Harbored a Long-Lived Dynamo – Magnetic Field Existed 3.6 Billion Years
The Daily Galaxy MIT’s research on an ancient lunar rock suggests that the moon once harbored a long-lived dynamo — a molten, convecting core of liquid metal that generated a strong magnetic field 3.56 billion years ago. The findings point to a dynamo that lasted much longer than scientists previously thought, and suggest that an alternative energy [...]
Read More →Magnetic fields created before the first stars
Nanowerk Magnets have practically become everyday objects. Earlier on, however, the universe consisted only of nonmagnetic elements and particles. Just how the magnetic forces came into existence has been researched by Prof. Dr. Reinhard Schlickeiser at the Institute of Theoretical Physics of the Ruhr-Universität Bochum. In the journal Physical Review Letters (“Cosmic Magnetization: From Spontaneously [...]
Read More →Magnetism flips heat flow
By Edwin Cartlidge | Nature The strange world of quantum mechanics just got a little stranger with the discovery that a magnetic field can control the flow of heat from from one body to another. First predicted nearly 50 years ago, the effect might some day form the basis of a new generation of electronic devices [...]
Read More →Cosmic rays reveal event in Earth’s magnetic field history
PhySorg 41 000 years ago, the Earth’s magnetic field faded and practically disappeared, leaving our planet unprotected from the bombardment of cosmic rays. Evidence for this event has been found in ocean sediment cores by a team from the Centre de Recherche et d’Enseignement de Géosciences de l’Environnement (CEREGE, CNRS/Aix-Marseille Université/IRD/Collège de France). In the [...]
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