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We can prove it's not a ball easily because east west flights around the world flight times, distances, & airspeed. With knowing that information for many decades they've had a calculated circumference distance of earth of which they have taught in school of between 24500 to 29000 miles at the equator. That is how they derived their curvature math at 8 in. per mile square. But what easily Debunks this nonsense is, using their math, a 6 ft person will not disappear in 3 miles. Willis tower in Chicago is viewable across Lake Michigan at 60 miles which is 1450 ft tall, but at 60 miles there should be 2400 ft of curvature drop. 😂 You can see the short buildings even!! To embarrass the hell out of masonic nasa & the establishment, people have viewed with high optics mountains across a few hundred miles of land & water both ! - that should be miles beyond curvature according to their math. LIARS 😂
Thank you for posting this excellent video. Before watching this video, I was confused about whether or not I should adjust the starting and ending control stations of my closed link traverse for a project involving a maintenance map for a road. You have cleared up any confusion that I may have had. Your control points 9002, 9003, 9007, and 9008 are GNSS points in my traverse. I have 4 traverse stations between them. Someone suggested that I reduce my grid distances to ground distances and recalculate my points before I perform a Compass Rule adjustment. Do you agree with their suggestion? My change in elevation from beginning to end is +/- 2.37' over a traverse length of +/- 3338'.
Your theory totally wrong...atfirst two leg should be firmly fixed then 3rd leg to cw acw or in out move....2 nd one bubble tube should be parallel to two foot screw and 90 degree to 3rd one
The globe is so desperate to lie about simple truth they need super complex math calculations to fool you into believing that what you are seeing is not real. Refraction is a real phenomenon but it varies moment to moment depending on atmospheric conditions therefore it is impossible to calculate or measure a constant effect of it. Besides even if it could be calculated it would not create the illusion of a perfectly flat plane with imaginary objects extending hundreds of miles into the distance.
The 18th century canal engineers knew about corrections for curvature and refraction, otherwise canals would have the water moving to one end. Over a 10km distance the error is 6.7 metres but over a modest 80km distance the error grows to a staggering 430m. The refraction error depends mainly on temperature, but for small surveys over distances of a few hundred metres a "standard" factor is often used as the correction is small. Not so over long-distance surveys.
What about earth curvature correction with instruments like laser trackers or total stations? do you apply the same correction for the elevations of the points measured in a cartesian coordinate reference frame?
