so nice right!?!?!?!?
a closer view! told u my hp camera very gd already!

really very lucky to see rainbow. coz normally we don see rainbow after a shower. but this time round we saw it without any rain!! how lucky!!! quick ask me for 4 digits~

We all have seen a rainbow occasionally in our daily lives during or immediately following a shower of rain and must have wondered the reason for this natural phenomena. Most of us, if not all, as a child must have been excited to see a rainbow in the sky and marvel at its splendid beauty and wondered where it came from.

Rainbows have always fascinated humans every since the early days and as such, have been the subject of songs, poems, stories and mythology. In Norse mythology, the rainbow is the road between the worlds of gods and men. The Greeks used to believe that it was a sign from the gods to foretell war or heavy rain. Indians believed that it was a bridge between life and dead and the Irish believed that a pot of gold lies at the end of a rainbow. It is also mentioned in the Holy Bible in The book of Genesis (Gen 9: 8-17) where the rainbow is the sign of covenant between God and all life on Earth .

Rainbows can be observed whenever there are water drops in the air and sunlight shining from behind the observer at a low altitude or angle. The most spectacular rainbow displays when half of the sky is still dark with draining clouds and the observer is at a spot with clear sky overhead. The rainbow effect is also commonly seen near waterfalls or fountains. Rainbow fringes can sometimes be seen at the edges of backlit clouds and as vertical bands in distant rain or virga. The effect can also be artificially created by dispersing water droplets into the air during a sunny day.

The rainbow's appearance is caused by dispersion of sunlight as it goes through raindrops. The light is first refracted as it enters the surface of the raindrop, reflected off the back of the drop, and again refracted as it leaves the drop. The overall effect is that the incoming light is reflected back over a wide range of angles, with the most intense light at an angle of 40°–42°. The angle is independent of the size of the drop, but does depend on its refractive index. Seawater has a higher refractive index than rain water, so the radius of a 'rain'bow in sea spray is smaller than a true rainbow. This is visible to the naked eye by a misalignment of these bows.[1]

The amount by which light is refracted depends upon its wavelength, and hence its colour. Blue light (shorter wavelength) is refracted at a greater angle than red light, but because the area of the back of the droplet has a focal point inside the droplet, the spectrum crosses itself, and therefore the red light appears higher in the sky, and forms the outer colour of the rainbow. Contrary to popular belief, the light at the back of the raindrop does not undergo total internal reflection and some light does emerge from the back. However, light coming out the back of the raindrop does not create a rainbow between the observer and the sun because spectra emitted from the back of the raindrop do not have a maximum of intensity, as the other visible rainbows do, and thus the colours blend together rather than forming a rainbow.

hehe. so happy~after that went loyang tua peh gong and changi beach!!!

tmr is my practical test le!! gotta wake up at 6.30AM!!!agh. must zzz early ahhh!!

wish me lucks man.

am i on my way to heaven?