Empirical Earth · The Boomerangs — Flat-Earth Proofs That Backfire

A spotlight Sun circling the center — and the sky that breaks it

The claim

“The Sun is a small, nearby spotlight circling over a flat-Earth map.”

What is measured

A spotlight Sun over a disc would have to do a great deal at once: light a sharp-edged patch, shine evenly from a few thousand miles up, hold its size and brightness all day, drop behind a hard horizon, and cover a stretched-out southern ocean. Every one of those has been checked. Not one of them holds up.

What would show this is wrong

a light meter reading the same under the Sun and four thousand miles out; or the Sun measuring a different width at noon than at dusk; or an Antarctic Sun that rises and sets in December instead of circling for a full day. Each is a reading anyone can take, and each has been taken.

Sources

  1. Sun's angular diameter. The Sun subtends ~0.5° (31–32 arcmin) and varies only ~3% over the year (Earth's elliptical orbit); its angular size is essentially constant from sunrise to sunset, i link
  2. Midnight Sun & polar night. Above the Arctic Circle (66.56° N) the Sun stays up 24 h at the June solstice while the Antarctic is in 24-h darkness; the boundary equals 90° − 23.44° axial tilt link
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