Concepts of flat Earth or concave hollow Earth called also skycentrism became popular last years. I developed a little these ideas to a neighbouring celestial body, it means to the Moon, writing a post on my blog about the flat Moon. At the post I used my photos taken by a photo camera Nikon P900.
Lately I tried to check the theory of flat Earth. On a website Demotywatory I found a photo (presented on the left side) taken from a fighter plane MiG 29 at a level 18 000 m. You can see that Earth is round. The horizon is convex. I marked the flat horizon with a straight red line. Inspired by the photo, I tried to check it at a less height. If the curvature of Earth is so good visible at the level 18 000 m so it should be visible at the level 10 000 m also, but around 2 times smaller. A few months ago during on an intercontinental route, at an altitude of around 10,000 m I took the photo which is presented below.
Lately I tried to check the theory of flat Earth. On a website Demotywatory I found a photo (presented on the left side) taken from a fighter plane MiG 29 at a level 18 000 m. You can see that Earth is round. The horizon is convex. I marked the flat horizon with a straight red line. Inspired by the photo, I tried to check it at a less height. If the curvature of Earth is so good visible at the level 18 000 m so it should be visible at the level 10 000 m also, but around 2 times smaller. A few months ago during on an intercontinental route, at an altitude of around 10,000 m I took the photo which is presented below.
We cannot see ground there but clouds created a horizon. I marked the flat horizon with a straight red line. The red line coincides perfectly with the horizon line. It seems it is flat. This photo is real because I took it. It means that the photo taken from the MiG 29 is not real. Watching youtube I found many movies made from aircrafts MiG 29. The horizon there sometimes is flat, sometimes is convex, sometimes is concave. Using film frames from these movies we can proof that Earth is round and convex, flat or concave and we live inside it. Probably the movies were made by cameras which had fisheye lenses and in real the horizon at the height of 18 000 m is as flat as at 10 000 m.
Conclusion is that common people cannot solve the problem of Earth's shape in a simple way.
Probably it results from the fact that we look along a generatix of cone l, as it is shown in the figure below, and the circle seems to us a straight line (when l << R), because we keep a constant distance l from the points of the circumferrence of a circle.
Conclusion is that common people cannot solve the problem of Earth's shape in a simple way.
Probably it results from the fact that we look along a generatix of cone l, as it is shown in the figure below, and the circle seems to us a straight line (when l << R), because we keep a constant distance l from the points of the circumferrence of a circle.
Conclusion is that common people cannot solve the problem of Earth's shape in a simple way.