Why does sun and moon appear big while rising?

Question

Answer

When the moon is near the horizon, the ground and horizon make themoon appear relatively close. Because the moon is changing its apparent position in depth while the light stimulus remains constant, the brain's size-distance mechanism changes its perceived size and makes the moon appear very large.

Answer

Because ye dono apni apparent position ko change krte rhte h jb ye depth mein hote H.. while the light stimulus remains constant, the brain's size-distance mechanism changes its perceived size and makes the sun or the moon appear very large.

Answer

The larger size is caused by a refraction of light when the moon is at the horizon because the light has to pass through greater amounts of atmosphere to reach you compared to when it is overhead. The same is true of the setting sun.

Answer

Why does the sun and moon appear big while rising?

Introduction:
The sun and moon often appear larger when they are near the horizon compared to when they are higher in the sky. This phenomenon is known as the 'Moon illusion' and the 'Sun illusion' respectively. While the sun and moon do not physically change in size, there are several factors that contribute to this optical illusion.

Atmospheric refraction:
When the sun or moon is close to the horizon, its light has to pass through a larger portion of the Earth's atmosphere compared to when it is higher in the sky. The Earth's atmosphere acts as a lens, bending the light rays and causing the sun or moon to appear slightly higher in the sky than it actually is. This bending of light is called atmospheric refraction. As a result, the sun or moon appears larger when it is closer to the horizon.

Comparison with familiar objects:
When the sun or moon is near the horizon, we have points of reference such as buildings, trees, or mountains to compare their size to. Our brain uses these objects as a reference and perceives the sun or moon to be larger in comparison. This is known as the Ebbinghaus illusion, where the perceived size of an object is influenced by the size of surrounding objects.

Contrast and brightness:
During sunrise or sunset, the sun or moon appears larger due to the surrounding atmospheric conditions. The sky near the horizon often has a vibrant color gradient and the presence of clouds, which creates a striking contrast with the sun or moon. This contrast enhances the perception of their size and makes them appear larger.

Conclusion:
The sun and moon appear larger while rising due to atmospheric refraction, the Ebbinghaus illusion, and the contrast and brightness created by the atmospheric conditions near the horizon. Although they do not physically change in size, our perception is influenced by these factors, leading to the illusion of a larger size.

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