I knew that. Ride anything that flies above 50,000 feet. If you know anybody in the Air Force, give them a camera and have them take pictures.
how can you guarantee that the curvature seen from 60,000 feet comes from the curvature of a globe earth and not from looking at the edges of the circular spotlight of the sun?
Well on a RE as an object disappears over the Horizon, it will experience a Rotation. If we use the coordinate system of Y being vertical, Z being in the direction that you are looking and X being horizontal perpendicular to the Z axis, then the rotation would occur along the X axis. This can be (and has been) measured.
However, under FET as an object approaches the horizon, it will not appear to rotate, just get smaller. As this has not been observed (the rotation has), we can conclude that the object is really disappearing over a curvature.
You can see this with the shape of the continents. The distortions due to the rotation is very different from the distortions caused by perspective. You can see this using your eyes, if you know what the differences are, or you can do a lot of complicated maths to prove it (what makes it complicated is that there is also the shrinkage of perspective, but when you o the maths, you can show that the shrinkage due to perspective is not enough to account for all the distortion).
Rowbotham was an idiot. Ships disappear due to bendy light.
Actually, I can disprove Bendy light altogether.
If bendy light is the cause of the Horizon, and when the Sun circles above the Earth it changes the radius of the circle to account for the seasons (it is closer to the North Pole in the Northern Summer and further away ion the Southern Summer), then this means that the Sun is further away from you in the Winter as compared to the Summer.
But, if the light is being curved, then the further way you are, the more the light has curved, so you should see a smaller amount of it. Now, this would neatly account for shorter days in winter, but it would also mean that the Horizon would be closer to you in the Winter than in the Summer. In other words, if you measure the horizon to be X miles away in Summer, in Winter it will be <X miles away. There will be a noticeable difference in the distance to the Horizon in Winter than in Summer. But guess what, the distance to the Horizon (note this is not the same as the limit of vision distance that fog and dust would create) is the Same regardless of the season.
Zetetic philosophy, which FET is based on, says that you have to look at all the evidence and come to a logical conclusion form that. This means that the conclusion can not contradict the evidence. As the conclusion of bendy light is that we should see a variable horizon based on the Season, and the evidence is that we don't have a variable horizon based on the season, the conclusion of Bendy light contradicts the evidence and so can not, therefore, be correct.
Therefore: Light does not bend.
If light does not bend, then the statement that the effect of ships disappearing over the horizon is due to bendy light must also be incorrect.