Update textbook.en.md

10.brainstorming-innovative-courses/intercambio-curso-electromagnetismo/textbook.en.md

@@ -634,13 +634,13 @@ $`\overrightarrow{rot}\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}`$
 
 Electromagnétisme dans le vide :
 
-$`\overrightarrow{rot}\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \mu_0 \cdot \overrightarrow{j_D} = \mu_0 \cdot (j+j_D)`$
+$`\overrightarrow{rot}\,\overrightarrow{B}=\mu_0 \cdot \overrightarrow{j}\,+ \, \epsilon_0\mu_0 \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \, \dfrac{1}{c^2} \cdot \dfrac{\partial \overrightarrow{E}{\partial t}`$$`=\mu_0 \cdot \overrightarrow{j}\,+ \mu_0 \cdot \overrightarrow{j_D} = \mu_0 \cdot (overrightarrow{j}+overrightarrow{j_D})`$
 
 avec $`\overrightarrow{j_D}`$ courant de déplacement :  $`\overrightarrow{j_D}=\epsilon_0 \cdot \dfrac{\partial \overrightarrow{E}}{\partial t}`$
 
 Con corriente de desplazamiento
 
-$`\overrightarrow{rot}\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}`$
+$`\overrightarrow{rot}\,\overrightarrow{E}=-\dfrac{\partial \overrightarrow{B}}{\partial t}`$
 
 $`div\overrightarrow{E}=\dfrac{\rho}{\epsilon_0}`$