100% proof there is no curvature - the flatness test proves flat earth
Channel: C.B.S.
Date: 19/06/2016

I've been sitting on this one a while to make sure there's nothing I've missed. I've devised an experiment that can 100% prove that the earth has no curvature - it just cannot work on a curved surface. Logical conclusion: THE EARTH IS FLAT!

ok, after replicating the experiment in my lounge, and in 3d software to make sure the test actually is accurate, I've found that:
1) the distance measurement must be taken from camera to the peak (or highest visible part of the object), or as close as possible for maximum accuracy.
2) the height of the camera above sea level must be accounted for.
2) the test decreases in accuracy as the objects deviate from the vertical line of the camera (ie, move left or right from center of frame)
3) with the objects in a perfectly straight vertical line (see no. 2) and exact measurements of distance (see above) and height above sea level, as well as camera height, the test is flawless (also assuming no lens distortion).

Bottom line: The test works, as long as a telephoto lens is used to keep the angle of the shot(s) to a minimum. and extreme care is taken to correlate the peaks (or buildings) in the photos . Over large enough distances the angles diminish and exact camera to peak distances are not needed.