diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/02.electromagnetic-waves-in-media/main/Mesoscopique.PNG b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/02.electromagnetic-waves-in-media/main/Mesoscopique.PNG
new file mode 100644
index 000000000..84a4e636f
Binary files /dev/null and b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/04.electromagnetism-in-media/02.electromagnetic-waves-in-media/main/Mesoscopique.PNG differ