Light, man… what a trip… 
Discussion
Refraction
Woah
Coloured shadows freak me out as well.
I recall someone once saying...
"Let there be..."
😆💖🙏🏻👍
🤔
Something about *rainbows*, too...😄
Looks really cool
AND one inside joke...🤣
Wow 🤯❤️🔥
There’s section in Story of Your Life
By Ted Chiang about light that was super trippy.
Physics is beautiful