WebMay 28, 2024 · Well, since there are 360 degrees in a circle and 30/360 = 1/12, then 400 must be 1/12th of the total circumference of the Earth. So the circumference of the … WebBecause seven degrees is about one 50th of a full circle (360 degrees), Eratosthenes simply multiplied the distance from Alexandria to Syene -- believed to have been about 515 miles (830 km) -- by 50. He calculated Earth's circumference at 26,000 miles (42,000 km), only five percent away from the modern accepted value of 24,901 miles (40,074 km).

Eratosthenes - Wikipedia

http://www-personal.umich.edu/~copyrght/image/books/Spatial%20Synthesis/Eratosthenes/#:~:text=Eratosthenes%20calculated%20the%20distance%20between%20Alexandria%20and%20Syene,on%20how%20ancient%20units%20convert%20to%20modern%20units%29. WebA New Perspective on Eratosthenes' Measurement of the Earth. Brown, Ronald A.; Kumar, Alok. Physics Teacher, v49 n7 p445-447 Oct 2011. Around 240 B.C., Eratosthenes made what is considered to be the most famous and accurate of the ancient measurements of the circumference of the Earth. It was accomplished by making "presumably … jeep\\u0027s br

How Eratosthenes measured the Earth

WebApr 18, 2024 · When Eratosthenes measured the Earth's circumference, he provided 250, 000 stadia as its measure equal to about 25, 000 miles. Since the radian is a … WebOct 22, 2024 · Note: The Earth is almost, but not quite, a perfect sphere. Its equatorial radius is 6378 km, but its polar radius is 6357 km - in other words, the Earth is slightly flattened. Eratosthenes was measuring the polar radius, and his value (using the 0.15 km/stadium conversion) lies between the polar and equatorial values. http://galileo.phys.virginia.edu/classes/609.ral5q.fall04/LecturePDF/L04-MEASURINGTHESOLARSYSTEM.pdf lagu malaysia berbeza kasta