Now a days everyone focus on astrophysics like black holes, Universe, Relativity.That is why there are a lot of online programs , courses available from which one can easily understand these concepts. But for Wave Optics, Scattering Theories of Light, Geometrical Optics there is no good course which is in detailed. I have already visited the available online courses but they did not as good as they have to. If anyone know about such detailed good course please share the link. Thanks