Gleason argued that the earth is flat in his 1890 book “Is the Bible from Heaven? Is the Earth a Globe?” ( here). They say “where expletive is Antarctica,” pointing to the “ice ring that goes around” the world. ![]() One Instagram user ( here) shared a TikTok video which tries to challenge the fact that that Gleason’s map is a projection of the earth as a globe. The geoid is an imaginary sea level surface that undulates (has a wavy surface) over all of the earth it isn’t just for the oceanic areas, it also extends through the land masses.Some social media users are saying that Alexander Gleason’s 19th Century “New Standard Map of the World” is proof that the earth is flat and that Antarctica is not a continent but an ice ring that circles the earth’s edges. Be that as it may, we all know that the earth is not really an ellipsoid because there are oceans, and mountains, and valleys, and many other features that are not part of an ellipsoid. If Earth were a perfect sphere, calculations of depth and distances would be easy because we know the equations for those calculations on a sphere. However, the Earth more closely approximates an ellipsoid, which is what a ball looks like if you sit on it. Ellipsoid calculations aren’t as easy as spherical calculations, but they’re still well-known and do-able. ![]() Visit Media to see details.Ĭontrast of the Geoid model with an Ellipsoid and cross-section of the Earth's surface. (Public domain.)Ī geoid is the irregular-shaped “ball” that scientists use to more accurately calculate depths of earthquakes, or any other deep object beneath the earth’s surface. Currently, we use the “WGS84” version (World Geodetic System of 1984). Sources/Usage: Some content may have restrictions.
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