Depending on how you scale a FE-map, Iceland is either 467 km or 734 km in East-West-direction. (SE-maps claim that it's 490 km.)
Depending on how you scale a FE-map, South-Africa is either 1040 km or 1634 km in East-West-direction. (SE-maps claim that it's 655 km.)
And you can do the same calculations for many more examples.
Isn't that wonderful?
There is a simple, undeniable, unmanipulatable experiment that will prove once and for all whether Earth is flat or spherical!
Anybody can do that experiment at any time and no government, agency or conspiracy will be able to manipulate it or deny the results!
All we have to do is to drive in a car from A to B and measure the distance!
NO TELESCOPES, NO LENSES, NO ATMOSPHERIC DISTURBANCES!
NO GUESS-WORK ABOUT THE SPEED OF AIRPLANES!
NO INFLUENCES WHATSOEVER FROM CELESTIAL BODIES!
JUST HARD, NON-PARTISAN EMPIRICAL EVIDENCE CALLING THE SHOTS!
And best of all: It settles the dispute Flat-Earth-vs-Spherical-Earth forever and ever!
Nobody will ever again argue about the validity of the Flat-Earth-model!
How cool is that?
It's a dream come true!
What are you waiting for?------------------------------
Calculations:
IcelandDiscworld-geometry #1:
* The Flat-Earth map shall be
http://www.3dham.com/blog/Flat_earthrot.jpg* The distance from the Northpole to Iceland is about 0.4 times the distance from the Northpole to the equator.
* Longitude-wise, Iceland stretches from -24° to -13.5° (ignoring the part to the Northwest). That means, Iceland is 10.5° wide.
* We calibrate our map: The equator shall be a circle, centered around the Northpole, with a circumference of 40,008 km.
=>
* Iceland is lying on a circle, centered around the Northpole, that has a circumference of 0.4*40,008 km = 16,003 km.
=>
* As Iceland is 10.5° wide, Iceland has a length of 10.5°/360° of that: ~466.8 km in East-West-direction
Discworld-geometry #2:
* Basically the same, except we calibrate the map so the distance between Northpole and South"pole" is 20,004 km
=>
* Distance Northpole-equator is 10,002 km, the distance Northpole-Iceland is ~4005 km.
=>
* Iceland is lying on a circle, centered around the Northpole, that has a circumference of 2*pi*4005 = 25,165 km.
=>
* As Iceland is 10.5° wide, Iceland has a length of 10.5°/360° of that: ~734.0 km in East-West-direction
South-Africa
* Same as above, except this time we're doing this with South-Africa, by going from Kapstadt to Port Elizabeth, which is an East-West-travel.
* These two cities are at 18.4° and 25.6° longitude respectively. => Their distance is 7.2°
* According to this map
http://www.3dham.com/blog/Flat_earthrot.jpg the distance Northpole-Kapstadt is about 0.6-0.7 times the distance Northpole-South"pole". (Let's assume 0.65)
Discworld-geometry #1:
* We calibrate our map: The equator shall be a circle, centered around the Northpole, with a circumference of 40,008 km.
=>
* Kapstadt is then lying on a circle, centered around the Northpole, with a circumference of 0.65 * 2 * 40,008 km = 52,010.4 km
=>
* As the distance Kapstadt-Port Elizabeth is 7.2°, the distance is 7.2°/360° of that: 1040.2 km
Discworld-geometry #2:
* We calibrate the map so the distance between Northpole and South"pole" is 20,004 km.
=>
* Kapstadt is then lying on a circle, centered around the Northpole, with a circumference of 0.65 * 2 * pi * 20,004 km = 81,698 km
=>
* As the distance Kapstadt-Port Elizabeth is 7.2°, the distance is 7.2°/360° of that: 1634.0 km