Links, with external photo sources: (Ciddor↓↓↓↓:) 1. https://refractiveindex.info/?shelf=other&book=air&page=Ciddor 2. https://en.wikipedia.org/wiki/Prism_(optics) 3. https://www.widoczki.com/droga-bar-drzewa-cafe-chmury-paint.html 4. https://www.widoczki.com/zjednoczo...