diff --git a/12.temporary_ins/95.electromagnetism-in-media/20.reflexion-refraction/main/comp-tang.jpg b/12.temporary_ins/95.electromagnetism-in-media/20.reflexion-refraction/main/comp-tang.jpg new file mode 100644 index 000000000..93f3eb7b1 Binary files /dev/null and b/12.temporary_ins/95.electromagnetism-in-media/20.reflexion-refraction/main/comp-tang.jpg differ