Le magnétisme terrestre

Le magnétisme terrestre est dû à la rotation du magma (roche en fusion). Pour le vérifier, des chercheurs ont reconstitué en laboratoire la rotation du sodium et ils ont obtenu un champ magnétique.

Ils ont également observé en laboratoire un inversement du champ magnétique (le pole nord passe au sud et le pole sud passe au nord). C'est ce qui se passe pour la terre tous les 100 000 ans.

 

 

Matières

Place more information below:

Headline #1

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.

Headline #2

"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."