First of all in reality it is just "common knowledge" that the earth is a globe and has been a known and proven fact for centuries. And there is no evidence of a flat earth.
It is a moot point anyway.
This is not acceptable proof that the earth is round... It has also been "common knowledge" since JFK's presidency that the american government has been lying to its citizens.
All of the following prove curvature of the earth proving the earth is globe
In the Navy.:
Ships and land passing out of view over the horizon
Measurements to the horizon dependent on height of the observer
Range of radar on certain frequencies limited to line of sight and dependent on height of antenna
Crow's nest lookouts limits of sighting limited by height of crows nests
All navy charts and maps are made from projections of the globe of the entire earth
No maps are made from flat earth maps because there are no flat earth maps of the entire earth
The explanation you've given me does not exactly prove the theory of a round earth, you've said that objects pass out of view over the horizon, Clearly you didn't even bother with the video, which was posted by someone who supports a round earth showing that the boat doesn't 'sink' out of view but gradually blurs away.
In the FAA
Design of certain radars whose frequencies operate line of sight and range limit by distance to the horizon, also definite depending on height of radar antenna
Certain radio frequencies operate line of sight and limited by distance to horizon
Certain radio frequencies used on microwave repeaters also operate line of sight and limited by distance to horizon
Sectional charts and maps are made from projections of the globe of the entire earth
No such thing as flat earth maps as mentioned previously
These are just a few reasons why the earth is a globe.
How does this prove that the earth is round? if they are operating at line of sight limited by the distance to the horizon, this makes the curvature of the horizon a non-factor as there is no line of sight which shows the horizon as curved.
Do you have any hard evidence of a round earth?