Eratosthenes explained how sunlight rays, although parallel, create different angles on Earth due to its tilt, influencing the seasons.
Eratosthenes stated that although sunlight rays are parallel when they reach Earth because of the sun's large distance, they appear to form varying angles on Earth's surface. This phenomenon is due to the Earth's tilt, which causes the rays to strike the Earth at different angles, leading to the seasons. The axial parallelism of Earth's tilt results in changes in sun angles during different times of the year, affecting the intensity of solar radiation received.
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