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**Flat Earth Investigations / Re: Curvature investigation**

« **on:**September 19, 2019, 06:45:34 AM »

Not an explanation, but a method for investigation;

Find a coastal location with a hill or two, somewhere you can climb to be above any passing ships, but still be within a few km of the shore.

Observe ships. Note your sightlines to those ships, or photograph them, particularly noting any where their masts or superstructures appear above the horizon, where you see sky behind and beyond.

Geometry dictates that if you are looking from a location above the ship, your sightline through the top of the ship, IF the seas are flat, must meet the sea beyond. It cannot miss it. Your sightline will be a descending sightline, in relation to the presumed flat plane below

Plug your heights and distances into any right-triangle calculator to calculate the point at which the sightline should meet the sea

https://imgur.com/CXUvjwa

https://imgur.com/1YmzYvU

https://imgur.com/CzJJDhS

Find a coastal location with a hill or two, somewhere you can climb to be above any passing ships, but still be within a few km of the shore.

Observe ships. Note your sightlines to those ships, or photograph them, particularly noting any where their masts or superstructures appear above the horizon, where you see sky behind and beyond.

Geometry dictates that if you are looking from a location above the ship, your sightline through the top of the ship, IF the seas are flat, must meet the sea beyond. It cannot miss it. Your sightline will be a descending sightline, in relation to the presumed flat plane below

Plug your heights and distances into any right-triangle calculator to calculate the point at which the sightline should meet the sea

https://imgur.com/CXUvjwa

https://imgur.com/1YmzYvU

https://imgur.com/CzJJDhS