Thin-film effects, viewed under a microscope, imitate the night sky. What you
see here is a flat surface that has a few defects on it (probably pieces of
dust), covered with a thin, transparent film. According to the thickness of the
film, you get different colors reflected back - this
![(Untitled)](/content/images/size/w795/a6e888cd5aa90e773731368b54efa4e0/tumblr_mrspfvgamB1spzrmao1_1280.jpg)