Linked Questions

24
votes
11answers
11k views

Backyard experiments to falsify the Flat Earth theory [duplicate]

I recently became aware that the flat Earth theory still exists in the 21st century, and has colored the views of a friend of mine. Roughly speaking, the tenets are: The Earth is a flat disk, with ...
1
vote
10answers
73k views

Why earth looks always flat when it is round [duplicate]

Yes, we can easily explain to all intelligent adults why the Earth looks flat, when it is actually round. But my question is, how can we explain this fact, that the Earth is round, to those people who ...
6
votes
2answers
2k views

Proofs that Earth is not flat? [duplicate]

Well, I do not believe that Earth is flat, but I met some conspirationistas believing that all physics we learn in school is twisted, all the Earth's pictures from space are photoshopped by NASA, etc, ...
2
votes
3answers
329 views

Is the Earth round? [duplicate]

Imagine you are a common man and want to prove that the Earth is Round, how would you prove it without any mathematical derivation or without the theory of the ships.
-1
votes
2answers
707 views

Prove the Earth is round without vision [duplicate]

I have been wondering for a while.There dozens of topics which prove the earth is round. But they all heavily rely on the vision of the person you proof it to. Is there any way, not at all relying on ...
9
votes
2answers
5k views

Triple-right triangle experiment: what's the minimum distance?

As I had showed in a previous answer, among the other ways to prove that the Earth is round, we have the triple-right triangle. The idea is simple: Starting from point A you move in a straight line ...
0
votes
3answers
1k views

Using normal rules of gravity, How would gravity work on a flat “world”?

The question is a bit vague, so let me provide some more context. Imagine we have a world like Middle-earth (prior to the end of the Second Age), or any of many fictional Fantasy worlds (Glorantha, ...
2
votes
2answers
111 views

Question about Earth being round, and whether a hypothetical scenario could be true [closed]

I am in no way, shape or form a physicist. This is a question I was debating in my head, and has nothing to do with flat Earth or protesting the Earth is not indeed round. I have a simple question ...
2
votes
2answers
226 views

Closed Room Experiment to prove Earth isn't flat

With Focault's pendulum, it is possible to demonstrate in a closed room that the Earth Rotates with respect to an inertial reference frame. And allowing guests to inspect and manipulate the pendulum ...
3
votes
1answer
143 views

How to measure radius of the Earth in cloudy weather?

The two methods I know to measure Earth's radius — the method of Eratosthenes and the stopwatch method — require the Sun visible during measurement. But in my location such weather is quite rare: it's ...