AnonymousGX [2018-02-02 17:04:27 +0000 UTC]
How Flat Earthers can prove the world is flat:
Round Earth globes say that if you travel across the world on 2 latitudes equally distant from the North and South Poles (for examples, the Tropics of Cancer and Capricorn, or Latitudes 75*N and 75*S), then those travel distances will be equal.
Even if you're not allowed to travel to the 90*S South Pole (which you are), assuming the North Pole is Flat Earth's center then the travel time across those mirrored latitudes should be significantly different.
For simplification, let's say that Earth's 180* of latitude on Round Earth is equal to 18 inches of a circle's radius on Flat Earth with the North Pole as the center.
For the Tropic of Caner, it's approximately 66.5*, or 6.65 inches, from the North Pole. pi*6.65*2 = 41.783 inch circumference.
Tropic of Capricorn is about 47* lower, making a 11.35 inch circle from the North Pole. pi*11.35*2 = 71.314 circumference.
IF Earth was flat, then Cancer will be about 58% the length of Capricorn, and 2 planes travelling the same speed along both can prove it.
OR
Just take the same make/model of airplane (which have the same limits on speed) on a commercial flight from New York to Europe (a North Hemisphere calculation), and South America to Australia (South Hemisphere Calculation). There are flights that have screens on each seat showing the plane's current speed and location. If Length = Speed*Time, then they can see which Earth model is more accurate between the two.
Unfortunately, those that have experimented with that idea know that is false. The Tropics aren't that significantly different in length, nor commercial flights between countries. Which is why they ignore that proof and instead falsely claim that for centuries all the governments of the world have been guarding the "ice wall of Antartica" and preventing any expeditions. Even though multiple people have reached the South Pole and gotten picked up on the opposite side of the planet in times that Flat Earth models would consider impossible.
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