How It Works

WHY IS THE SKY BLUE?

veryone loves a blue sky, but why does it take on that particular colour when it isn’t obscured by clouds? The answer lies in the physics of what happens when sunlight passes through the atmosphere. The light rays are scattered in all directions as they hit air molecules, and light at the blue end of the spectrum is scattered more strongly than other colours. That’s why the sky usually appears blue when we look in any

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