So tappet, at what height are you claiming you can see 100km of horizon to put said straightedge on?
Do you think you cannot look left to right and not see 100km. Standing on a beach.
What height do you think you would need to be to clearly see horizon curvature? Since I know you aren't a flat earther, you are allowed to answer.
According to a photo you produced once claiming it showed curvature I would say standing on the beach.
First, I have never posted a picture from beach level saying you could see the curvature. That is another of your blatant lies in attempts to discredit me.
Also, no you cannot turn your head and see 100s of Km from one spot on from ground level. At best you could see around maybe 10 to 15 km from left to right of the 180 degree FOV in front of you. Your FOV is a 360 degree circle around you, and if you are at standing height. The radius of that circle is around 5 to 6 km. So the diameter is only 10 to 12 km. Ill give you 3 more just for fun and say 15 km. Even if you added up the circumference of that circle then you would only get to a little less than 32 km for the entire 360 degree FOV.
So I asked at what height you could see this so called 100km horizon. You said roughly head height with your 178cm number. So you are incorrect, yet again. Or you are just lying again.