Does the Prism Effect Influence the Color of Sunsets?

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In summary, the color of the sky and the reason for red sunsets are both due to the scattering of light in the Earth's atmosphere. Blue light is scattered the most, resulting in a blue sky, while red light is left behind during sunsets due to the angle of the sun and the amount of atmosphere it passes through. Prisms do not play a significant role in this process.
  • #1
Tibriel
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So the latest i read was that the sky is blue because that is the color of air, just like water is blue for the same reason. Now this short article i read also claimed that sunsets are red because of some property of light that causes it to show different colors when it transmits light as opposed to reflects light.

What troubles me in the last part is when you look at what prisms do. They split white light up into a rainbow of colors. And I thought that the atmosphere did likewise; when the sun's light hits the Earth's atmosphere at an angle we go from white light to reds, oranges.

So do they both play a part or does the way prisms work not play a part in why we see different colors at sunset?
 
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  • #2
The sky is blue because blue light is scattered best.
If you aren't looking directly at the sun then any light you see must have been scattered, since blue is scattered most - you see blue, the red light went straight through the atmosphere and out the other side.
 
  • #3
As Tom Weller once said, "Why is the sky blue?" "Because it reflects the sea".

To add to mgb_phys, the same process explains why sunsets are red. When the sun is low in the sky, light travels through a lot of atmosphere, and much of the bluer light gets scattered away, leaving only the red.
 

Related to Does the Prism Effect Influence the Color of Sunsets?

1. Why do sunsets appear red?

Sunsets appear red due to a phenomenon called scattering. As the sun sets, its light travels through more of the Earth's atmosphere, and this causes the shorter blue and green wavelengths to be scattered away, leaving behind the longer red wavelengths.

2. Is there a difference between a sunset and a sunrise?

No, the same scattering phenomenon occurs during both sunsets and sunrises, resulting in the same red appearance.

3. Can weather affect the color of a sunset?

Yes, weather conditions such as clouds, humidity, and pollution can affect the scattering of light and therefore impact the color of a sunset. A hazy or cloudy day can create a more vibrant and colorful sunset, while a clear day may result in a less intense red hue.

4. Why do some sunsets appear more orange or pink?

The color of a sunset can vary depending on the amount of particles and pollutants in the air. For example, a sunset may appear more orange if there is a high concentration of dust or pollution in the air, while a pink sunset may be a result of the scattering of light off of water droplets in the atmosphere.

5. Can the angle of the sun affect the color of a sunset?

Yes, the angle of the sun can impact the color of a sunset. When the sun is lower in the sky, the light has to travel through more of the Earth's atmosphere, resulting in a more intense red color. As the sun gets higher in the sky, the light has to travel through less atmosphere and the sunset may appear less red.

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