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In approximately 300 B.C., Eratosthenes, a Greek mathematician living in Alexandria, devised a method of calculating the circumference of the Earth and in doing so, provided evidence to support his long held belief that the Earth is a sphere.
From the results of the experiment, Eratosthenes deduced that the towns could not be on a flat surface and that they must, instead be on the surface of a sphere. He went on to calculate the circumference of the Earth by the following simple reasoning:
He knew that Assouan lay due south of Alexandria at a distance of 580 statute miles. He reasoned that if the Earth were indeed a sphere, then a line drawn around its surface would describe a circle. Since there are 360o degrees in a circle and since 7.2o is one fiftieth of 360o, the distance from Alexandria to Assouan must be one fiftieth of the circumference of the Earth. Therefore, the circumference of the Earth, according to Eratosthenes, must be 50 x 580, that is 29000 statute miles.
The latest measurements show that the correct distance from Alexandria to Assouan is 500 miles and if Eratosthenes had known this, the result of his calculation of the Earth’s circumference would have been: 50 x 500 = 25000 statute miles.
Eratosthenes believed that the Earth is a perfect sphere and the above calculations were based on that assumption. However, we now know that the Earth is in fact an oblate spheroid (i.e. it bulges at the Equator). For this reason, there can be no single value for its circumference but the value generally accepted as its mean circumference is 24825.8 statute miles and when we consider that this measurement was made with the use of modern technology, it is quite remarkable that it is not too far removed from the findings of Eratosthenes whose only form of technology was the ‘shadow stick’.
To be clear on the above post. That up high in a plane not high up in a plane LOL.
originally posted by: network dude
why did they make the moon round, but the earth flat?
Crafty bastards!
originally posted by: AutumnWitch657
a reply to: ThreeDeuce
All the proof you need for a globe is a lunar eclipse. Our shadow on the moon is round. If the earth were flat there would be a flat shadow. Like a bar across the moon.
Plus we have pictures of the earth from space.
originally posted by: AutumnWitch657
a reply to: ThreeDeuce
We can see the three dimensional orientation of the moon. It doesn't look like a flat disk it looks like a ball.
Plus we went to the moon and we have pictures of the other side.
Plus I have an app that turns the moon and I can see the other side. You can see photos of the other side online.
If you argue this point too strongly people will think you believe the earth is flat no matter how many disclaimers you post.
originally posted by: Phage
a reply to: ThreeDeuce
The answer is indoctrination.
No. The answer is physics, evidence, and mostly critical thinking.
originally posted by: hellobruce
Please show some evidence research on it is deleted.
www.scar.org...
originally posted by: EvillerBob
Pfft. "Physics" is mostly made up of people guessing. Evidence can be made to fit whatever you want it to fit. If critical thinking was truly being used, this would all be obvious.
originally posted by: stargazers
a reply to: EvillerBob
If you calculate the mathematics it actually does add up to a oblique.
Sure about that? Have you ever seen the moon spin around?
It's a little bit convenient that we only ever see one side of the moon. Just like it was some kind of... flat object.
I for one have decided to fully embrace the possibility of the world being flat. OP's video has convinced me.