87KiB, 960x720, Rainbows+Rainbows:+angular+relationships+predicted+from+geometric+optics+and+ray+tracing+(using+Snel%u2019s+Law).jpg View SameGoogleiqdbSauceNAO Anonymous Thu 08 Aug 12:37:19 2019 No.10873470 ViewReplyOriginalReport Quoted By: >>10873477 do you mathtards actually understand why your formulas work or are you just memorizing common applications