Can rainbows make a full-circle?
If you could get up high enough in the sky, then you’d see that some rainbows continue below the horizon. That’s because when the sun and rain combine to make a rainbow, they really make a full-circle rainbow. We can’t see all of the circle, because the horizon blocks it from our view. Pilots high in the sky do sometimes report seeing genuine full-circle rainbows. Are there double rainbows? Yes, they do happen! The inner and brighter rainbow has the red on the top and the blue on the bottom side. The outer and dimmer rainbow has the color scheme reversed. What is an upside-down rainbow? An upside-down rainbow is an unusual phenomenon caused by sunlight shining through a thin, visible screen of tiny ice crystals high in the sky. Interestingly enough, it has nothing to do with rain. Some people refer to this as a ‘smile rainbow’. Why can’t you ever find the end of a rainbow? A rainbow is an optical illusion, so you just can’t catch up to it. When you move, so does it! Can a rainbow appea
