Tuesday, February 24, 2009 Y
HELLO :Dbecky ;
- happy-go-lucky (sort of o.o)
- hobbies; drawing, reading, manga, watching anime
-interest; ANIMALS, my dog(: , the rainbow[especially double rainbows]
- how to be a good group member; well, of course I'll do my very best to help out when we are doing an experiment or any other things. In the team, I am the one who records down things. So when we go on a excursion, or during an experiment, I'll record down important notes or points we might need later on. During excursions, when we go outside of the school for a project, I might get too engrossed with my surroundings and leave my group members behind because I am an out-going person. But I am trying my best to be more serious in my work as it might help in examinations or during tests.
I've always wondered how double rainbows were made. And have you notice the second rainbow's colour order is the the exact opposite as the first one?
Anyway, did you know ; A rainbow does not actually exist at a particular location in the sky. Its apparent position depends on the observer's location and the position of the sun. All raindrops refract and reflect the sunlight in the same way, but only the light from some raindrops reaches the observer's eye. This light is what constitutes the rainbow for that observer. The position of a rainbow in the sky is always in the opposite direction of the Sun with respect to the observer, and the interior is always slightly brighter than the exterior. The bow is centred on the shadow of the observer's head, or more exactly at the antisolar point (which is below the horizon during the daytime), appearing at an angle of 40°–42° to the line between the observer's head and its shadow. As a result, if the Sun is higher than 42°, then the rainbow is below the horizon and cannot be seen as there are not usually sufficient raindrops between the horizon (that is: eye height) and the ground, to contribute. Exceptions occur when the observer is high above the ground, for example in an aeroplane (see above), on top of a mountain, or above a waterfall.
{/♥becky, jasmine goh, liting, tingting, raihanah}
[the environmentally-friendly and green people :D]
Labels: I Rock ♥ Fullstop :D
&&- 5:53 PM
