<iframe src="https://podeduc.apps.education.fr/video/74895-how-fiber-optic-cables-are-made-and-work/?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=qbs01nKngACDGk3B3Z-6yv_eUeY 360 https://podeduc.apps.education.fr video 640 1.0 Jeremy Bollore