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Flat Earth Theory / Distances on the Flat Earth Model

« on: April 10, 2019, 05:19:43 AM »

I meant to post in this subforum originally. If the Earth is flat, why is the distance from my house to the nearest Walmart 1392 meters instead of the 1530 meters you would expect on flat earth with an azimuthal equidistant projection given the coordinates of my house and the nearest Walmart? D_f is the flat earth distance, D_fs is the "square" flat earth distance, and D_r is the round earth distance. https://www.desmos.com/calculator/0lftnuqmz0 Calculation for flat earth map distance: http://walter.bislins.ch/bloge/index.asp?page=Distances+on+Globe+and+Flat+Earth

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Flat Earth Theory / Distances on the Flat Earth Model

« on: March 08, 2019, 06:47:01 AM »

How is the distance between two points given their respective latitude and longitude calculated in the flat earth model? Does it depend on what flat earth map is used?

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Flat Earth Theory / Distance to the Moon

« on: December 21, 2018, 11:04:44 PM »

On a flat earth, parallax can still be used to determine the distance to celestial objects. However, the observer baseline distance will not be the chord length but the distance between two points on a flat earth. Using hypothetical simulations, I have concluded that the moon must be 377585 km instead of 4800 km! Isn't that higher than the supposed dome? Why would the moon be higher than the sun in the flat earth model?

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Flat Earth Theory / Solar elevation angle on a flat earth part 2

« on: December 21, 2018, 07:12:00 PM »

I performed another experiment today. If the Earth is flat, why is the shadow length I measured at a latitude of 40 degrees 23 arcminutes at 12:03 PM on 12/21/2018 46 inches instead of the 33.5 inches that the flat earth model predicts? I used a piece of plywood 22 11/16 inches long. By measuring the length of a shadow cast by a stick, we can take the arctangent of the length of the stick divided by the length of the shadow to determine the sun's angular elevation above the horizon. I have taken the value for the sun's height from the wiki (3000 mi/4800 km). I have also factored in the declination of the sun and the obliquity of the ecliptic to ensure the most accurate predictions for both models. The flat earth model predicts an angle of 34.088 degrees. The round earth model predicts an angle of 26.162 degrees. The round earth model predicts a shadow length of 46.18 inches. Ergo, the round earth model error is 0.38% (0.097 degrees). The error can easily be explained by atmospheric refraction which is on the order of a few arcminutes. Why does the flat earth model have an error of -23.3% (−14.719 degrees) from reality? How does the flat earth model explain the deviation of the sun's angular elevation from its predictions? θ_sr is the round earth prediction and θ_sf is the flat earth prediction in the following desmos link. https://www.desmos.com/calculator/nskhv0a2kd

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Flat Earth Theory / Sun position on the flat earth

« on: December 20, 2018, 04:45:40 AM »

If the Earth is flat, why is the shadow length I measured at a latitude of 40 degrees 23 arcminutes at 1:40 PM on 12/8/2018 53 inches instead of the 33 inches that the flat earth model predicts? I used a piece of plywood 22 11/16 inches long. By measuring the length of a shadow cast by a stick, we can take the arctangent of the length of the stick divided by the length of the shadow to determine the sun's angular elevation above the horizon. This formula can also be used to determine the predicted shadow length for each model by dividing the length of the stick by the tangent of the model's predicted angular elevation. By dividing the height of the sun by the horizontal distance to it, the arctangent of the result can be used to determine the flat earth model's predicted angular elevation of the sun. I have taken the value for the sun's height from the wiki (3000 mi/4800 km). The sun's angular altitude on a round earth can be found by finding the arcsine of the addition of the product of the sine of the observer's latitude and the sine of the sun's declination to the product of the cosine of the observer's latitude, the cosine of the declination of the sun, and the cosine of the hour angle. I have factored in the declination of the sun and the obliquity of the ecliptic to ensure the most accurate predictions for both models. The flat earth model predicts an angle of 37.578 degrees. The round earth model predicts an angle of 23.210 degrees. Why does the flat earth model have an error of 32.1% from reality? How does the flat earth model explain the deviation of the sun's angular elevation from its predictions? θ_sr is the round earth prediction and θ_sf is the flat earth prediction in the following desmos link. https://www.desmos.com/calculator/sepoxbrqfz