by wyrm on 2/13/22, 5:09 AM with 1 comments
by idiocrat on 2/13/22, 6:18 AM
The curvature of the earth is that you need to be elevated 400-500 meters over sea level to have a sight of line of 60 kms to the horizon; the horizon is only 5 kms away at the 2 meters elevation.
Perhaps those measurements were done mountaintop-to-mountaintop.