02.07.08 - Circular Rainbows

But taken by a crappy camera phone, HAHA! Darn it, if I have my D40 (and even better if it’s equipped with a 10-20mm ultra wide angle), I would had gone all the way - climb to the roof top of the building, and take the perfect shot.

Circular Rainbow

^ I really like this shot (except for the quality, lol) because the rainbow and the inside region of it look as if they’re not part of the rest (of the sky), looks like a globe in the sky, lol (the big chunk of cloud looks like a big continent, erm, Asia?).

Circular Rainbow

^ From another area, I can see two rainbows!

From Wikipedia:

Occasionally, a second, dimmer, and thicker secondary rainbow is seen outside the primary bow. Secondary rainbows are caused by a double reflection of sunlight inside the raindrops, and appear at an angle of 50°–53°. As a result of the second reflection, the colours of a secondary rainbow are inverted compared to the primary bow, with blue on the outside and red on the inside. The dark area of unlit sky lying between the primary and secondary bows is called Alexander’s band, after Alexander of Aphrodisias who first described it.

From the photo itself, we can see that the secondary rainbow is dimmer & thicker, as mentioned by Wikipedia, but the colours are not inverted as explained, weird. Maybe they’re not the same phenomena. =\

You can create your own rainbow by facing 180 degrees from the sun and spraying mist from a garden hose in front of you in a circular motion, outlining a 360 degree “rainbow”.

Initially, I thought it’s a halo or other kind of light phenomena, but if I am not wrong, it’s just a normal rainbow that happen to occur directly above where we were, i.e. Maktab Duli. And when I recall, the Sun was directly above me when we were looking at the rainbow, it’s about lunch time and yea, the Sun is high above the sky and the rainbow look as if it’s circling around us. I read from a few other sources that such rainbow can be seen from directly below or opposite the Sun (on land or on aeroplane and etc).

4 Responses to “02.07.08 - Circular Rainbows”
poli275 Posted on 3 July, 2008 at 9:57 pm

Read that in BB just now, too bad din saw that yesterday when on my way to bandar:D

IngSiang (Vagabond) Posted on 5 July, 2008 at 10:01 pm

BB said it’s a Halo, which I think is more likely to be the phenomena because of the highlight and difference colour inside and outside the ring.

However, the condition doesn’t seems like the one that a halo would form. In fact, the conditions of the weather at that time actually met the condition for a rainbow to form, so I am totally confused, lol. =\

teddY Posted on 8 July, 2008 at 3:30 pm

Wow the circular rainbow is such a rare phenomenon! Being an unlucky person who’ve seen rainbows in less than 15 occasions in his life (yes, I do count my rainbow sightings in a diary!), it’ll be even rarer for me to stumble on a circular rainbow that looks more like a halo than anything else :) thanks for sharing the photo!

It’s weird because I’ve learned that secondary rainbows have an inverted colour (ie, the colours are inside out)… maybe it’s coincidence that brought two separate rainbows together!

IngSiang (Vagabond) Posted on 9 July, 2008 at 6:46 pm

That’s really unlucky, hahahaha, =D

Anyway, if you follow the comments in this post, it is indeed halo. =D

Maybe I should look into it, haha, maybe I can write an award winning article out of it! =D

Post a Comment