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The term probably originated from Schmidt [1916] (referred to in Chapman and Bartels, 1940, p. 133), who called 12-month averages of the geomagnetic field elements the Normalwerte (normal values). Schmidt compared these normal values with his "secular values"—10-year averages of the field...
The geodynamo model for the origin of the earth's field is lent further credence by the fact that the moon which turns around its own axis very slowly once in 28 days has a negligible magnetic field. Also, Jupiter which spins much faster than the earth has a very strong ma...
Earth science: What triggers reversals of the Earth's magnetic field?. Nature 309, 115 (1984). https://doi.org/10.1038/309115a0 Download citation Issue Date10 May 1984 DOIhttps://doi.org/10.1038/309115a0 Springer Nature Limited Share this article Anyone you share the following link with ...
This occurs as a result of the planet's gravity, and also because of the effects of its magnetic field. Now, if material from Saturn's rings is being lost and nothing new is added from time to time, the rings would be disappearing. ...
Magnetite (also known as lodestone) is the most magnetic of all the naturally-occurring minerals on Earth. (Image credit: Aleksandr Pobedimskiy via Shutterstock) If the alignment of unpaired electrons persists without the application of an external magnetic field or electric current, it produces a...
If light passes through a vacuum polarization, it will exhibit this change via a vacuum birefringence. With a pulsar, the light is most certainly polarized because of the high magnetic field. It would also polarize any vacuums that form around it, and with the VLT light was spotted that ...
Researchers have shed light on how heat is conducted by the inner and outer cores of the Earth to create its protective magnetic field. AsianScientist (Jun. 16, 2016)– Earth’s magnetic field shields us from deadly cosmic radiation. Without it, life as we know it could not exist. But ...
Earth's magnetic field shields us from deadly cosmic radiation, and without it, life as we know it could not exist here. The motion of liquid iron in the planet's outer core, a phenomenon called a "geodynamo," generates the field. But how it was first created and then sustained through...
I don't know if this is quite possible. An electromagnetic field generator would be immensely dangerous if it were possible to construct. We could disrupt the earth's orbit. It also would be vastly beyond our capability to construct something which would stop or reverse the incredibly powerful...