Flat Earth Follies: Ship Over The Horizon
Flat Earth Claim
YouTube video claims 'Ship visible at 12 miles on horizon':
The Facts
Seems to me either this ship is sinking or we have confirmed Earth's curvature.
I created some side-by-sides up to the 7.8 mile mark -- seems like the missing height is right about where it should be at 13.2 feet missing given your 7.5 foot high observation point.
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| Figure 1. captures of the ship at various distances, resized for comparison |
The last frame in this series shows the horizon/water line has risen to be all the way the back of the boat.
Given the observer height of 7.5 feet and a distance approximation of 7.8 miles we get a height Obscured at that distance of 158 inches (~13.2 feet) [see also derivation for this formula].
As we have reviewed previous, this is NOT explained by perspective.
BTW I think I ID'ed this ship as the CLARA.
This ship is not very high so the 13.2 feet is a very good match at this distance.
Beyond this point the ship becomes very difficult to see and we have no way to know if it's REALLY 11.8 miles out or not. This is a claim that would need to be substantiated before it's even worth investigating further, but even then the ship does continue to sink further below the horizon curvature but it's far too blurry to measure anything and there is too much water vapor in the atmosphere to tell if we're seeing the effects of refraction.
I think this video confirmed that the curvature estimate is pretty good and that the horizon lines falls where we would expect on a curved Earth.
Meanwhile, the Flat Earth model fails to account for the observation as we would expect to still see all the way down to the water-line with the same clarity that we can see the upper portion of the ship. There is nothing in the Flat Earth model that explains the sinking ship.
Given the observer height of 7.5 feet and a distance approximation of 7.8 miles we get a height Obscured at that distance of 158 inches (~13.2 feet) [see also derivation for this formula].
As we have reviewed previous, this is NOT explained by perspective.
BTW I think I ID'ed this ship as the CLARA.
This ship is not very high so the 13.2 feet is a very good match at this distance.
Beyond this point the ship becomes very difficult to see and we have no way to know if it's REALLY 11.8 miles out or not. This is a claim that would need to be substantiated before it's even worth investigating further, but even then the ship does continue to sink further below the horizon curvature but it's far too blurry to measure anything and there is too much water vapor in the atmosphere to tell if we're seeing the effects of refraction.
Conclusion
I think this video confirmed that the curvature estimate is pretty good and that the horizon lines falls where we would expect on a curved Earth.
Meanwhile, the Flat Earth model fails to account for the observation as we would expect to still see all the way down to the water-line with the same clarity that we can see the upper portion of the ship. There is nothing in the Flat Earth model that explains the sinking ship.
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