![]() ![]() Hughes’s rocket crashed into the dust with absolute finality. But the parachutes that had bloomed above Mike Hughes on his previous death-defying rocket launches were nowhere to be seen. “Come on, parachute,” one watcher murmured anxiously. To onlookers on the ground, the ship and the man inside it were a blur of black. ![]() For a moment, the rocket seemed to hover, oblivious to gravity. A jagged trail of steam traced the ship’s path across the sky, up thousands of feet above the California desert. ![]() A circle with a diameter of 25,000 miles across is simply the area of land which the light of the sun affects, and represents the area of our known world.The rocket took off like a punctured balloon, wobbly and erratic. The earth is physically much larger, of course. Doubling that figure for the diameter we get a figure of 25,000 miles. ![]() Therefore we can take the distance of 500 miles, multiply by 25, and find that the radius of the flat earth is about 12,250 miles. Eratosthenes discovered through the shadow experiment that while the sun was exactly overhead of one city, it was 7☁2' south of zenith at the other city.ħ☁2' makes a sweep of 1/25th of the FE's total longitude from 90°N to 90°S (radius). Syene and Alexandria are two North-South points with a distance of 500 miles. We can use Eratosthenes' shadow experiment to determine the diameter of the flat earth. He was actually measuring the diameter of the flat earth (distance across), which is a figure identical to the circumference of the round earth (distance around). Eratosthenes had simply assumed that the earth was a sphere in his experiment, based on the work of Aristotle. It's a common misconception that Eratosthenes was measuring the circumference of the round earth in his shadow experiment. ![]()
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