<iframe src="https://podeduc.apps.education.fr/video/22120-effet-de-la-refraction-de-la-lumiere/?is_iframe=true" width="640" height="360" style="padding: 0; margin: 0; border:0" allowfullscreen loading='lazy'></iframe> PodEduc https://podeduc.apps.education.fr/videos/?owner=bellessort christophe 360 https://podeduc.apps.education.fr video 640 1.0 Christophe Bellessort https:/media/cache/02/cb/02cbab159ac898b09620f41e6033860d.png 640 360