You have been ignored for common interest of mankind.

Bonneville salt flats 12 miles = 8' earth curve.Level laser for 1 mile. the end of the flats the beam should be 8' above the starting point.

I think rowbotham said refraction is 1/6 i think that 1/6 of the final answer as in 1/6 of the calculated curvature. Can anyone clarify?

Facts aren't real.