ANIMACIONS
https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_es.html
https://www.fisicalab.com/apartado/ley-de-coulomb#contenidos
https://www.vascak.cz/data/android/physicsatschool/templateimg.php?s=elpole_el_pole&l=es
https://www.vascak.cz/data/android/physicsatschool/templateimg.php?s=elpole_pole&l=es
ANIMACIÓ: EL CICLOTRÓ
Animacions ones electromagnètiques:
