#### Macarios

##### Question about usability of Flat model
« on: March 14, 2018, 06:22:36 AM »
Out of three main models used in history:
- Flat model (abandoned 2500 years ago)
- Geocentric model (Biblical model, abandoned 400 years ago)
- Heliocentric model
some people, after 2500 years, try to cancel both, Geocentrism and Heliocentrism, and revert us back to Flat model.

Let's skip all nitpicking and cherry-picking and get all the way down to the basics.

What is the use of Flat Earth model?
Why lately some people insist on it?
What is it good for?

We can circumvent lack of accurate Flat Earth map and measure distances from North pole in degrees of latitude:

Tropic of Cancer is 66.5 degrees from North pole.
Equator is 90 degrees from North pole.
Tropic of Capricorn is 113.5 degrees North pole.
(113.5 - 66.5) / 66.5 = 0.71 = 71%.
Radius of Tropic of Capricorn is 71% bigger than radius of Tropic of Cancer.
So, circumference of Tropic of Capricorn is 71% also bigger than that of Tropic of Cancer.
(If you want to calculate distances, one degree is 60 nautical miles. One nautical mile is 1852 meters.)

We know very well that Sun travels 15 degrees per hour.
Go out and measure in any time of a day, any time of a year, and you will see for yourself.

Flat model puts Sun at 5005 kilometers high (3110 miles).
If you disagree, please show us your own altitude, to apply correction here.

Now, let's calculate Sun's speed for solar noon:

On Summer solstice for solar noon Sun is directly overhead in Ar Rayn, Saudi Arabia, 23.5 degrees north:
30 minutes before solar noon it was 5005 km * tan(7.5 degrees) = 659 km more to the east.
30 minutes after solar noon it was 5005 km * tan(7.5 degrees) = 659 km more to the west.
In 60 minutes (15 degrees per hour) Sun moved for 1318 km, so in 24 hours moved for 1318 * 24 = 31 632 km.

On Winter solstice for solar noon Sun is directly overhead in Polokwane, South Africa, 23.5 degrees south:
30 minutes before solar noon it was 5005 km * tan(7.5 degrees) = 659 km more to the east.
30 minutes after solar noon it was 5005 km * tan(7.5 degrees) = 659 km more to the west.
In 60 minutes (15 degrees per hour) Sun moved for 1318 km, so in 24 hours moved for 1318 * 24 = 31 632 km.

How?

Tropic of Capricorn is 71% wider than Tropic of Cancer.
Circumference of the Tropic of Capricorn should be 71% bigger.
It should be 31 632 * 1.71 = 54 091 km.
Why is it now 31 632 km again?

How "useful" is Flat model to calculate this?

Or maybe Flat model is good for something else?
For what?﻿