Can anyone explain to me why the online calculator shows a hidden part of 108m from 1.38 eye level instead of the proclaimed 91.46 m claimed in this video ? Is the online calculator wrong ? Also the horizon is at 4.19 km instead of 4.52 km when an eyelevel of 1.38m is taken into account, something is off here......or it is due to my limit
108m is correct and fits perfectly with the video.
Anyway, important is THAT some parts are hidden by curvature. There are lot's of reasons why it will not be that accurate, e.g.
- Refraction
- Waves
- Tides
- Hard to measure exact height of both observer and the "bulge" in between the objects.
But it is a difference of appr. 15%

?......i thought it was about ''rock solid math'' ?
And this is by no means meant to be offending.
I am the first to acknowledge proof, but why do those who claim to have proof (seen that a lot on the flat earth side too) always favour the rock solid math to fit the prefered outcome ?
I live in the Netherlands and we have a 100+ km sealevel flat beach. Our country is one of the flattest in the world and below sealevel for big parts.
I have been to the coast all my life and have seen things streching to 20 km out.
My friend and i have a Nikon 83x zoom and you can slowly pan accross the coastline so that any disturbance in the seawater is easily avoided. A flat beach as far as the eye can see.
We have sea harbors (IJmuiden) with 100m harbor mouths into the sea. I could see them from great distances when doing a beach walk accross the coastline.
On a good clear day i will post pictures and all the involved distances, from camera level and object heights.
I think the flat earth model is crazy, but our current measurements of the globe seem to be off.
Always proof by the absence of so called ''bottom parts'' of skylines and towers or superiour mirages that pop into excistance.
If that online calculator is (like you said) correct, then i can measure the distance from the little town Katwijk (used to live there for 18 years) - IJmuiden (32.19 km) and set my camera on a height of 1.80 m and according to the curvature calculator IJmuiden should be a whopping 58.9 meters below the curvature.
I shouldn't be able to sea anything of the harbor mouth and or supertankers / large seaships coming in......
Furthermore in my childhood in Katwijk our fishermen's fleet was stationed in IJmuiden, because Katwijk didn't have an own sea harbor. The locals claimed they could see IJmuiden on a very rare clear day.......didn't pay any atention to this untill recently.
It will me my pleasure to take the Nikon out for a little experiment according to the accurate numbers of the curvature calculator.
Even ''Noorwijkerhout-IJmuiden'' shouldn't allow for the harbor mouth to be seen.....well that is bloody rediculous !!!
Noordwijkerhout-IJmuiden 23.7 km. Camera height 1.80. hidden height target 28m......by no means i should see the harbor mouth of rock and stone, because it hasn't got a height of 28m.
Very strange indeed..........please do not use all the mockery that seems to be normal around here.
This is so strange that i actually cannot believe the calculator is right, or that the curvature is not what we think it is........