Rounding the earth

Spherical Earth or Earth's curvature refers to the approximation of the figure of the Earth as a sphere. The earliest documented mention of the concept dates from around the 5th century BC, when it appears in the writings of Greek philosophers. The concept of a spherical Earth displaced earlier beliefs in a flat Earth : In early Mesopotamian mythologyrounding the earth, the world was portrayed as a disk floating in the ocean with a hemispherical sky-dome above, [8] and this forms the premise for early world maps like those of Rounding the earth and Hecataeus of Miletus. Other speculations on the shape of Earth include a seven-layered ziggurat or cosmic mountainalluded to in the Avesta and ancient Persian writings see seven climes.

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Rounding the earth

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If you take that same pendulum to the South Pole it will also rotate—but in the opposite direction, since you would be standing in Antarctica, completely rounding the earth down with respect to the North Pole pendulum. Oct 07, And so the timing of when it will lower in the sky and eventually disappear behind the horizon will change, rounding the earth.

Like the other planets, the Earth is a sphere. It rotates around its own axis slowly but continuously, and completes this rotation about once every 24 hours. As the Earth rotates, part of the Earth is facing the sun, and part of it faces away. This is why some parts of the world have day and night at different times. There are a number of reasons why scientists know that the Earth is round, and not flat. It turns out that we can test many of these reasons out for ourselves, too.

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Rounding the earth

After my first few posts, I thought it reasonable to write up something like a mission statement that explains this newsletter. We live in an increasingly complex world. Topics of public import are often beyond the time investments of most people to research and synthesis. It is hard enough for many people to stay on top of their daily work and raise a family, much less become experts on everything that matters. So, people look to experts, particularly through the media.

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Dec 10, Oct 17, We can see different features on the surface of other planets, like Mars, as those round planets spin. Apr 21, Like the other planets, the Earth is a sphere. Apr 04, Dell Cameron. Further information: History of geodesy. Feb 06, We have never found another planet that is flat, so why would Earth be any different? But standing on the shore of a lake, it only needs to be 3 miles wide and you won't be able to see the other shore. Dec 13, Rounding the Earth is a multimedia online community hosting robust discussions about COVID, economics, geopolitics and other important issues. Nov 01, From new to old.

There are plenty of ways to prove the earth is round, here are 10 that should be convincing. Ships and the Horizon.

OK, just for fun—let's figure out how far you would be able to see if you were standing on the edge of a lake. There are a number of reasons why scientists know that the Earth is round, and not flat. Sep 19, May 12, You are standing on one side of the lake with a tall building on the other side. Oct 11, Approximation of the figure of Earth as a sphere. Oct 28, May 08, Sep 22, Maybe they just like a challenge.