From b56f7df6bda98eff11baa9c6f127b80f104402a3 Mon Sep 17 00:00:00 2001 From: Claude Meny Date: Tue, 15 Oct 2019 18:23:33 +0200 Subject: [PATCH] Update cheatsheet.en.md --- .../02.mirror/02.new-course-overview/cheatsheet.en.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md index 494508cad..555bcebc2 100644 --- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md +++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.en.md @@ -54,7 +54,7 @@ $`\Longrightarrow`$ A real object gives a virtual image.
* In each point of the spherical mirror, the law of reflection applies. * A spherical mirror is not stigmatic: The rays (or their extensions) coming from an object point generally do not converge towards an image point (see Fig. 2.) -* A spherical mirrors with a limited aperture (see the angle $`\alpha`$ (rad) lower on Fig. 3. and 4.) and used so that +* A spherical mirrors with a limited aperture (see the angle $`\alpha`$ (rad) which is reduced on Fig. 3. and 4.) and used so that angles of incidence remain small (see Fig. 4.) become quasi-stigmatic. ![](spherical-mirror-rays-stigmatism-1000-1.jpg)