Empirical Earth · Shape, Curvature & the Horizon

The concave Earth — the globe turned inside-out

The claim

“The Earth is a sphere, but we live on the inside — it’s concave.”

What is measured

Concave Earth is either wrong or empty. If light runs straight, the horizon would rise. It doesn’t. If light bends to hide the difference, the model is just the ordinary globe in a costume. Either way, the world curves away from you, not around you.

What would show this is wrong

Stand at a shoreline with a level and a telescope. If the Earth were concave, distant ships and coastlines would sit above eye level and show in full. Instead they fall below the horizon and vanish from the waterline up. A single laser leveled over a few kilometers of still water settles it.

Sources

  1. Cellular Cosmogony. Cyrus Teed’s concave hollow-Earth doctrine (1869), the Koreshan Unity commune at Estero, Florida, and the “rectilineator” coastal survey. Wikipedia: Hollow Earth link
  2. Concave Earth is unfalsifiable by construction. A bent-light concave model is a geometric inversion of the globe that reproduces every observation, so no experiment distinguishes the two. Ae link
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