invariances.py

Created by alten01

Created on May 07, 2025

543 Bytes

th d ampere
int cheminC Bscalairedl=u0Ienlace

On regarde si les caractéristiques 
physiques du problème changent 
lorsqu’on effectue une translation 
ou une rotation

en fait, si dans les infos quon te
donne on ecrit que cela depend que 
de r, alors il y a invariance en 
z et teta

infiniment long => z invariant

B->(r)=B(r)uteta->

pour choisir le dl il faut choisir
un chemin intelligent de sorte que
B soit constant sur le chemin

si je trouve B(r) u teta
alors dl = rdteta

si je trouve B(r) u phi
alors dl = rdphi

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