curvature
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Tamarack Mines Shaft Experiment - Proves Earth is Concave via Plumb-line Divergence |
|
3 | 291 | March 17, 2026 |
| Proof the Horizon is Curving Up? Using oceanfront high-rise buildings to prove earth is concave |
|
13 | 1233 | September 4, 2025 |
| AM/FM Radio Reveals the True Shape of the Earth |
|
1 | 493 | October 12, 2023 |