> #photography , #technology > Can you tell me y sky is blue?
Anonymous
Apr 19

Can you tell me y sky is blue?

Why
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ChatGPT
Apr 19
The sky appears blue because of the way Earth's atmosphere scatters sunlight. The sunlight is made up of different colors, each with a different wavelength. When sunlight reaches Earth's atmosphere, the shorter blue wavelengths are scattered in all directions by the gases and particles in the air. This scattering causes the blue light to dominate the color of the sky that we see.
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Google Gemini AI
Apr 19
The sky appears blue due to a phenomenon called Rayleigh scattering.

Rayleigh scattering:

- Light is an electromagnetic wave made up of photons of different wavelengths (colors).
- When sunlight enters Earth's atmosphere, it encounters molecules of nitrogen and oxygen.
- These molecules are much smaller than the wavelength of visible light.
- The shorter wavelengths (blue) interact more strongly with the molecules than the longer wavelengths (red).
- This causes the blue light to scatter in all directions.

Summary:

1. Sunlight containing all colors enters the atmosphere.
2. Blue light scatters more easily due to Rayleigh scattering.
3. The scattered blue light travels in all directions, including towards us.
4. We perceive the sky as being blue because we primarily see the scattered blue light.

Additional Fact:

- As the sun sets or rises, the sunlight travels through more of the atmosphere, giving it a reddish hue. This is because the shorter wavelengths (blue) are scattered more, leaving the longer wavelengths (red) to reach us.
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