diffraction/optique de Fourier (3/3) : filtrage optique/détramage/strioscopie

New channel E-Learning Physique: title sample judged 'whole' (A dedicated physics teaching channel with rigorous courses, worked exam corrections, and lab experiment explanations for); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.