diff --git a/12.temporary_ins/95.electromagnetism-in-media/10.propagation-lhi-media/10.main/prop_lib_g.png b/12.temporary_ins/95.electromagnetism-in-media/10.propagation-lhi-media/10.main/prop_lib_g.png
new file mode 100644
index 000000000..d571dd494
Binary files /dev/null and b/12.temporary_ins/95.electromagnetism-in-media/10.propagation-lhi-media/10.main/prop_lib_g.png differ