Rainbows are such beautiful phenomena, aren’t they? Up there in the sky, you see an arch of seven colors, each band as pretty and mesmerizing as the next. Rainbows are quite rare, since you need to have a sunny and rainy day at the same time. I’ve often wondered why rainbows are always curved, rather than in a straight line, or even a square, but to understand this natural phenomenon properly, we need to know why a rainbow is formed in the first place. Advertisement The Birth of a Rainbow A rainbow needs two things: water droplets and sunlight. Under the right conditions, … Continue reading Why are Rainbows Always Curved or Arched?
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