3 ms·
Except the distances here are twice that, and the farther you get apart the more the curvature matters.
by agf 5y ago
Except the distances here are twice that, and the farther you get apart the more the curvature matters.
- someguydave 5y agoYes true, but presumably this report is for observers standing less than 10m off the surface, not on tall mountains or towers