We have done 7 curvature experiments on lake Balaton (Hungary) and lake Ijssel (Neatherlands), and our results do not conform with the WGS84 model.
We developed a Terrestrial Laser Targeting (TLT) method to make long range precise targeting and measurements possible. We talk about this method in the video, and the pdf document as well.
The expected target hidden hight is never obcured in any of these long range 12 to 40km (upto 25 miles) measurements.
Refraction calculations, as well as ellipsoid, MSL and geoidundulation are presented in the pdf document.
We would like to discuss this topic and hear your opinions.
Yes it will have the very same curvature in any direction on a ball.
Width is not a factor here, as curvature calculation is not for an area, but for a line between 2 points. A 100 mile long line will have 6667 feet of curvature in any direction regardless of position.
We have done all ellipsoid, MSL and geoidundulation calculations in the pdf and showed, that all the corrections are negligable in our case of curvature measurement.