I finally got around to making another one of these. I put it off forever, then other things happened. I've got a small gap of time between student teaching and I resisted mass effect 3 long enough to make this. I was going to include more quantum mechanics stuff but this was big enough. I kept double checking my facts before making simplifications then losing an hour reading some related material and realizing how much of the field I really don't understand. Let me know if there's anything people want explained, I could do how rainbows are made easily, or I could push on and cover some quantum mechanics.