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the Earths rotation.
The Sun only appears larger near the horizon, but when its apparent size is measured accurately it isn't actually bigger. It's just that near the horizon your eye has distant objects to compare it with, so it looks bigger.
The moon rotates around the earth, and as it does so, our view of it makes it appear to 'rise' and 'set,' though really it's just spinning around us.
The Sun is the same apparent size all the time. It looks larger at sunrise and sunset because you can see its size in comparison with things on the ground like trees and buildings. The same phenomenon happens with our Moon.
. . . every natural object that you can see in the sky. Unless you're standing at the north or south pole. Then everything just goes around and around, parallel to the horizon, but never rises or sets.
the Earths rotation.
-- day and night -- rotation of atmospheric pressure systems -- rotation of the plane of Foucault's pendulum -- rotation of ocean eddies and currents -- apparent rising and setting of sky objects
The Sun only appears larger near the horizon, but when its apparent size is measured accurately it isn't actually bigger. It's just that near the horizon your eye has distant objects to compare it with, so it looks bigger.
When we view the rising and setting of the sun, we assume the viewpoint of a motionless Earth, but we know that the Earth is actually rotating on its axis, and the sun does not orbit the Earth.
The moon rotates around the earth, and as it does so, our view of it makes it appear to 'rise' and 'set,' though really it's just spinning around us.
We say that it is 'setting,' but this is apparent motion, and not true motion. The same is true for the rising and setting of the moon and fixed stars. There is another spectacular example of apparent motion that is different from true motion. Because the moon 'rises' in the east and 'sets' in the west, it is easy to think that it is "moving" from east to west. In fact, the moon's orbit around the earth is from west to east. The slow (monthly) orbit of the moon along with the 24-hour rotation of the earth give us the impression of the moon's apparent motion.
The rising and setting of the Sun, the Moon, and the stars is simply a reflection of the rotation of planet Earth.The rising and setting of the Sun, the Moon, and the stars is simply a reflection of the rotation of planet Earth.The rising and setting of the Sun, the Moon, and the stars is simply a reflection of the rotation of planet Earth.The rising and setting of the Sun, the Moon, and the stars is simply a reflection of the rotation of planet Earth.
The rising and setting of the sun.
The Sun is the same apparent size all the time. It looks larger at sunrise and sunset because you can see its size in comparison with things on the ground like trees and buildings. The same phenomenon happens with our Moon.
. . . every natural object that you can see in the sky. Unless you're standing at the north or south pole. Then everything just goes around and around, parallel to the horizon, but never rises or sets.
erm, no
Benjamin Franklin.