Much of the 'memory' of the world and all our digital activities are based on media, hard disks, where the information is encoded thanks to magnetism, by orienting the spin of electrons in one ...
Déplacement au cours du temps du plan de l´équateur et du plan de l´écliptique, par rapport à un système de référence inertiel, dû aux actions gravitationnelles de la Lune, du Soleil et des planètes.
The Earth is not the steady round rock we think it is, and it’s not turning the graceful circles we imagine. Every little-bit-more-than-a-year, we make a sort of wobble in space called a nutation. Why ...
image: An international team of scientists has managed for the first time to observe the 'nutation' of spins in magnetic materials (the oscillations of their axis during precession). The measured ...
La nutation est un phénomène astronomique lié à la rotation d'un astre, en particulier la Terre, et plus précisément à l'oscillation périodique de l'axe de rotation de ce corps céleste. Ce terme ...
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