Egyptian Ell Brings Out the Earth’s Diameter. An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a northwestern European unit of measurement. Originally it was understood as a cubit (the combined length of the forearm and extended hand).
Egyptians used a measure called the ell which equaled four cubits. The intended cubit is the smaller Egyptian cubit of 1.7181818…feet. At the Great Pyramid, its basic triangle would be 55 x 70 x 89 ells. Fifty-five ells would be the half base. The line of the triangle representing its slope would be eighty-nine ells. Height becomes 70 ells.
How does the Egyptian Ell Work?
First of all, the plan uses a right triangle. Pythagoras claimed a² + b² = c². Let’s plug in the ell figures. We come close to a right triangle formula that numbers the Earth’s diameter in miles. Ancients commonly set the diameter at 7920 miles.
- Make a² , the shortest side, (55²) = 3025.
- b², the next longest side, (70²) = 4900.
- c², the hypotenuse, (89²) = 7921.
a² (3025) + b² (4900) = 7925. c² = 7921
Earth is not quite a sphere. The planet’s rotation causes it to bulge at the equator. Earth’s polar radius is 3,950 miles — a difference of 13 miles. The difference in the application of the Pythagorean Theorem is not the same, but at least points out there is a difference between the two measures.