Double Happiness

Last tues, I went for a jog into Rookwood Cemetery near my house along my usual route when it started drizzling. "What bad luck!", I thought. As I continued jogging and made a turn, I looked up into the sky to find 2 rainbows!! It was beautiful and almost unbelievable!! It is difficult to see a rainbow, let alone 2 of them...Great reward for being out in the rain early in the morning at 8.45am...=)...I wished I had a camera to capture that moment...so here's a picture I found online...of a double bow...

This was exactly what I saw that very day. The lower rainbow was so bright, just like this one! The outer rainbow is fainter and the colours are actually inverted, if you observe hard enough...I didn't notice this change in the position of the colours at that point of time, but isn't it intrigueing?...There is actually a physics explanation for this phenomenon which I found online...=P



A double rainbow consists of a primary bow and a secondary bow. Raindrops that cause a primary bow are much lower in the sky than those that cause the secondary bow, and they only refract and disperse the incoming light once. The secondary bow, on the other hand, is produced from raindrops that are higher in the sky, and refract and disperse light twice.

So why are the colours inverted in the secondary rainbow? Light is refracted and dispersed twice in the drops that produce a secondary bow. This causes the colors to come out in the opposite order of the primary bow.

Are you folks following the diagram? Hee+...my physics is so bad that actually I don't really understand...any chance that the physics folks out there may want to try explain to me k??



It's the very first time I saw a rainbow from one end to the other end, there was nothing blocking my view...好漂亮啊！雨过天晴的感觉真棒！


再送大家多一份祝福，就算只是张照片，就算你们或许看过不少彩虹。希望大家天天幸福哦！