Update textbook.es.md

6 years ago · e9a2a86a1e
1 changed files with 5 additions and 0 deletions
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/01.lens-main/textbook.es.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/03.lens/01.lens-main/textbook.es.md
@ -1,3 +1,8 @@
+---
+title: 'Towards thin lenses'
+published: true
+visible: false
+---

 <!--### Lenses classification