When I was younger, I spent a lot of time collecting things around the house and using a microscope to examine them. While I had a lot of fun examining things, the one thing that was lacking was the ...
Suite aux élaborations théoriques de Louis de Broglie en 1924 ,on a pu prouver en 1926 que des champs magnétiques ou électrostatiques pouvaient être utilisés comme lentilles pour les faisceaux ...
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