I'm uneducated about this, and my answer may be completely wrong. Logically, however, I would guess that it is due to the speed of both the rotation and the sidereal motion of the earth. For a few moments, the sun's rays pass through and refract towards the observer at the proper angle to view a rainbow. Of course, this is given the atmospheric conditions are conducive to the rainbow itself. Therefore, one must factor in the movement and density of the moisture and wind in the atmosphere. The speed of rotation of the earth is about 1,001 mph and the sidreal speed is about 6,700 mph. The rainbow appears and fades as the optimum angle for the viewer given the atmospheric conditions passes. This brings to my mind a curious question: do rainbows appear on other planets, and if so, what atmospheric conditions allow them? For example, Venus has a thick cloud layer-is it then possible that one might observe a rainbow or something like it, if one were to stand on that planet? And, what about auroras, which are caused by solar emissions passing through the magnetic sphere of the earth?
The shadow of the airplane will appear at the center of the complete circle formed by the rainbow. This is because the shadow is always cast opposite to the direction of the sunlight, and the sunlight is directly behind the airplane when a complete circle rainbow is seen.
Look for a rainbow opposite to the direction of the Sun. This means that if the Sun is setting in the West, the rainbow will appear in the Eastern sky.
A rainbow appears in the sky when sunlight is refracted, or bent, by raindrops in the atmosphere, separating the sunlight into its different colors.
A rainbow appears on the ground when sunlight is refracted and reflected by water droplets in the air, creating a spectrum of colors.
A rainbow appears in the sky when sunlight is refracted, or bent, by raindrops in the atmosphere, separating the sunlight into its different colors.
Apparently, a rainbow appears in the sky because both, rain and sun, mix together and produce light and colours. Some people belive that at the end of a rainbow is gold. But how does the gold just appear suddenly?
After it rains, and the sun comes out. Iris' symbol is a rainbow so after the rain comes a rainbow.
A rainbow must always be in the opposite direction from you compared to the sun. So if you see a rainbow in the morning, its center would be in a generally westerly direction from you.
So far it has not been mentioned as to whether or not he will appear.
Iris, the goddess of rainbow could make rainbow appear.
Currently Rainbow Dash does not appear to have a boyfriend.
Movies don't appear in the rainbow.
After it rains outside and it is sunny, you may be able to find a rainbow.
A rainbow is formed when sunlight is refracted and dispersed by water droplets in the atmosphere. The colors in a rainbow are produced by the visible light spectrum, which does not include black. Black is the absence of light, so it does not appear in a rainbow.
No reason at all
Long hairs can suddenly appear on the body due to hormonal changes, genetics, or certain medical conditions.
Rainbows appear sometimes when its raining and some appear after but they should dissapear.A rainbow should appear whenever the sun is behind you in a clear skyAND there are water drops in the air in front of you.