WebMay 4, 2024 · But how to come up from this fact for calculating the circumference of the Earth? Eratosthenes thought the following way. Well, the difference in angle between these two cities is equal to 7.12°, which is 50.56 times less than a full circle. Thus if one measures the distance from Alexandria to Syene and multiply it by this amount, then what ... WebEratosthenes reasoned that the ratio of the angular difference in the shadows to the number of degrees in a circle (360°) must equal the ratio of the distance to the circumference of the Earth. The resulting estimate, about 25,000 miles (40,234 km), is astonishingly accurate. In making his calculations Eratosthenes measured distance in stadia ...
How many miles around the Earth? - The Nine Planets
WebWho was Eratosthenes? The 1st person able to measure the circumference. of the Earth (came within a couple hundred km of. actual value). How did Eratosthenes measure the circumference of the Earth? He used geometry and ratios to determine the size of the Earth, by basing his calculations on observations of the sun. What did he assume? WebAnswer (1 of 2): How the circumference of the Earth was first measured: Thousands of years ago, a very smart Greek mathematician named Eratosthenes of Cyrene (born 276 … ipod classic 6th generation battery
analysis This measurement is more than 2,200 years old, and its
WebThe circumference of the Earth can be found by two methods. Method 1: Earth's circumference can be found out by using the geometric formula that was used over 2,000 … Webcircumference of Earth with remarkable accuracy. As related accomplishments, he also demon-strated that Earth is essentially spherical and measured the tilt of its axis (23.5°). (Although a spheri-cal Earth had been suggested 300 years earlier by Pythagoras, appar-ently for purely asthetic reasons, Eratosthenes provided the first geometric proof.) WebApr 8, 2024 · Born in the ancient city of Libya, Eratosthenes of Cyrene (276 BC-194 BC) was able to calculate the diameter and circumference of the Earth without the help of high-tech tools. He was a ... orbis handcreme