Earth Question

[Johan_1955]

Maybe to much for some:

https://www.youtube.com/watch?v=McdMMmclGVc

[conradelektro]

Maybe to much for some:

https://www.youtube.com/watch?v=McdMMmclGVc

This video is really too much for me.

I sailed with a 14 meter yacht from the Netherlands to Norway (straight up over the North Sea, heading almost 0°) and I always saw ships, oil rigs and buildings on shore first the top and then more and more of their height.

I also went several times with a cruise ship and made the same observation. But one sits rather high above the water level on a cruise ship, so you might see 20 km, the weather must be good.

Once I sailed with a 12 meter yacht from Harwich to Scheveningen and on the second day of the journey it was absolutely calm and the North Sea was  like a mirror. You could clearly see the round seemingly flat area around the ship (like sitting on a round table top) terminated by the horizon not so far away (6 to 10 km depending on being 1 meter or 2 meters above the see level with the eyes) and ships came up from the horizon showing their highest point first.

But I simply looked and did no use high precision GPS, nor Lasers. So do not believe me, make a boat trip yourself.

I heard the story of the flat or concave earth told by people who could see from Konstanz to Lindau (40 km) on the Bodensee. It was explained by reflections on airsheets having different temperatures. This phenomena can only be seen rarely for a short time when the weather is just right (cool air sitting above warm air near the water, the cool air is blown in by strong winds and soon cools the air above the water).

If you shine a laser 60 km through air part of the tight beam scatters and you will see some light 60 km away. In the video they were constantly moving the laser beam till they saw something on the other side of the lake. Well, they saw sometimes scattered rays, not the whole beam which would be many meters wide.

High precision GPS over kilometers is not precise enough to see the leaning of buildings this far apart.

They never show numbers in the video, just endless talk.

I saw a video on you tube, where they tried a laser experiment over water some 40 kilometers. They failed because they could not point the laser accurately enough to do the measurement. The laser always shot way off with the slightest movement of its mounting. Apparently it is very difficult to target a laser beam at something 40 km away.

But if you want to believe that the earth is bent the other way, feel free to do so, no harm is done, because everything will work as if you believed in a spherical earth. And that is a miracle.

Greetings, Conrad

[stivep]

https://www.davidsenesac.com/Information/line_of_sight.html#:~:text=Visual%20Line%20of%20Sight%20Calculations%20dependent%20on%20Earth%27s,the%20square%20root%20of%20the%20height%20in%20feet.
Wesley

[Paul-R]

I tend to think that one participant to this thread may have been
dropped on his head when he was small.

[Temporal Visitor]

Maybe to much for some:

https://www.youtube.com/watch?v=McdMMmclGVc

Quite correct.