What I propose here in this post is a simple Experiment that can 100% prove that the Earth has a spherical shape, without going into the space with some expensive Nasa spacecraft to look directly at it. The tool that it's needed is a camera, but is fundamental the collaboration of some of you around the planet.
In fact if some peolple collocated at different latitudes, for example from North Europe to South Africa, take a photo of the Moon in about the same time, one can see that the image of the Moon rotates as we look to the photos taken from north to south, like in the image. And this is possible only if the surface of the Earth is curved. So if the photos will show this phenomenom we can be definily sure that the Earth is curved.
An explanation of this phenomenon is given by the fact that: if the earth is curved, if one travels from North Europe to South Africa looking at the Moon, is like you are looking at it from different angulations. In fact, try to look at a fixed objet and turn your head down looking at it. At the end of the movement you will see the objet in reverse.
(maybe this image should be a little confusing, but the idea is that the Moon is behind the sheet and it is in a fixed orientation. But the littles stylized men look at it at diffrent angles. So I represent what they see from their point of view. The black point indicates the lowest part of the Moon that they see.)
Instead it won't be possible in a flat Earth, where a fixed objet will remain in the same orientation as one moves from a side to the other side.
So I propose to wait for November 30th, because in that day the Moon will be in her last quarter, like in the image, and if someones want to take part of this little but global experiment, what you have to do is just to take a photo of the Moon in that day where is possibly visible the horizon to avoid any complains, and send to me it, writing the PLACE where it was taken. The more I will receive it, the better the result will be. I will do a post with all of your best photos mentioning you, and that will be THE PROVE that should convince all of the more tenacious followers of the Flat-Earth Theory .
You can send it via comment here in this post then you will receive an upvoted , or via email at: for-the-earth@virgilio.it
Thank you for the collaboration.
See you in about seven days.
lallo