TwoTiredMice@feddit.dk to Today I Learned@lemmy.worldEnglish · 2 天前TIL: Rainbows are actually full circlesbigthink.comexternal-linkmessage-square45fedilinkarrow-up1268arrow-down16file-text
arrow-up1262arrow-down1external-linkTIL: Rainbows are actually full circlesbigthink.comTwoTiredMice@feddit.dk to Today I Learned@lemmy.worldEnglish · 2 天前message-square45fedilinkfile-text
minus-squareArmok_the_bunny@lemmy.worldlinkfedilinkEnglisharrow-up4·1 天前Aren’t there actually 5, with the other two being on the opposite side of the viewer from the main 3?
minus-squarepurplemonkeymad@programming.devlinkfedilinkEnglisharrow-up6·1 天前I don’t think there is a limit, it’s just that each one is significantly less visible. It’s all to do with the number of bounces within the rain drop. IIRC rings 1 and 4 are towards the sun. In cold climates you can also get sun halos where the position depends on the shape of the ice crystals in the air.
Aren’t there actually 5, with the other two being on the opposite side of the viewer from the main 3?
I don’t think there is a limit, it’s just that each one is significantly less visible. It’s all to do with the number of bounces within the rain drop.
IIRC rings 1 and 4 are towards the sun.
In cold climates you can also get sun halos where the position depends on the shape of the ice crystals in the air.