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"text": "The sky appears blue due to a phenomenon called **Rayleigh scattering**. Here's a breakdown:\n\n* **Sunlight and Colors:** Sunlight is actually made up of all the colors of the rainbow.\n* **Entering the Atmosphere:** When sunlight enters the Earth's atmosphere, it collides with tiny air molecules (mostly nitrogen and oxygen).\n* **Scattering of Light:** This collision causes the sunlight to scatter in different directions.\n* **Rayleigh Scattering:** Rayleigh scattering is more effective at scattering shorter wavelengths of light. Blue and violet light have shorter wavelengths than other colors like red and orange.\n* **Why Blue, Not Violet?** While violet light is scattered even *more* than blue, our eyes are more sensitive to blue light. Also, the sun emits slightly less violet light.\n* **The Result:** Because blue light is scattered more throughout the atmosphere, it's what we see most of the time when we look up at the sky.\n\n**Think of it like this:** Imagine throwing a small ball (blue light) and a large ball (red light) at a bunch of obstacles. The small ball is more likely to bounce off in random directions, while the large ball is more likely to go straight through.\n\n**Why are sunsets red?** At sunset (and sunrise), the sunlight has to travel through more of the atmosphere to reach our eyes. This means that most of the blue light has already been scattered away. The longer wavelengths of light, like red and orange, are able to penetrate the atmosphere and reach us, creating those beautiful sunset colors.\n\n\n\n",
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"text": "Why is sky blue ?",
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