Last week’s astro club meeting was about… as you have guessed, rainbows and arches created by ice crystals. Now, I know it has nothing to do with stars and planets, but hey, the atmosphere is above us, so… Anyways, the bulk of the meeting could be described in the following video:
By the way, about the secondary arc stuff, there is also tertiar, quartenary, etc etc etc. The thing is, each arc decreases in brightness as they reflect and escape inside the raindrop. Also, the third, fourth, seventh, eight, etc are in the sun, and most people don’t look towards the sun when looking for bow. The limit for human eye may be third, who knows, maybe there is a way to see or photograph the third one, but there is none yet. So, I don’t know if there could be a way to see it, though the astro club presenter did suggest an experiment to see it.
Also, if you think that the rainbow actually touch some part of the land or something, you are wrong. So wrong that you don’t even deserve to have a peek at this web site. Seriously, you are really wrong. The rainbow is a product of your mind, an optical illusion, and there is no measurement of its distance. It is only measured in degrees. Therefore, it can be of any “size” (there really is no size, since it is from your mind), but it will always be an angular size between 40 to 42 degrees. Read the rest of this entry »