diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/EM-waves-propagation en construcción - 1/topic.en.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/EM-waves-propagation en construcción - 1/topic.en.md
new file mode 100644
index 000000000..6c2988a33
--- /dev/null
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/EM-waves-propagation en construcción - 1/topic.en.md	
@@ -0,0 +1,7 @@
+---
+title : 'electromagnetic waves and propagation'
+published : false
+visible : false
+---
+
+ok, tu peux y aller :)