30/04/2026
Rainbows are not only beautiful but they’re also science in action!
A rainbow forms when sunlight passes through tiny raindrops in the air. As the light enters each drop, it slows down and bends. This process is called refraction. Sunlight may look white, but it is actually made up of many different colours, each with a different wavelength.
Because each colour bends by a slightly different amount, the light spreads out into separate colours as it leaves the raindrop. Red bends the least, while violet bends the most, which is why rainbows always appear in the same sequence: red, orange, yellow, green, blue, indigo and violet.
Curiosity about everyday phenomena helps children develop a love of science and discovery.
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