Science · 6 pages · 12 min

Why the equator receives more direct sun

A high Sun concentrates the same beam on a smaller patch of ground.

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From the opening

The equator receives more direct sun because the midday Sun stands high there, so a beam of sunlight covers a small patch of ground. Farther toward a pole the same beam arrives at a slant, spreads over a larger patch, and each bit of ground gets less. The opening covers a steep beam covers less ground, a slanted beam spreads and weakens, and a longer path through the air.

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Inside

  • A steep beam covers less ground
  • A slanted beam spreads and weakens
  • A longer path through the air
  • Why this is not closeness to the Sun
  • Where the idea stops applying
  • A distinction worth keeping

Sources

  • Angle of incidence of sunlight
  • The difference between overhead and slanting beams