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Globe Earth and beyond, a searchable Database of Links to Resources that "prove" the Earth is a Globe.

Bolivia Salt Flat is not Flat

The Bolivia Salt Flat appears flat as far as we can see. So Flat Earther use this as proof that the earth is flat. Using UNAVCO GPS reference stations I can prove that the Bolivia Salt Flat curves exactly as predicted by the WGS84 Globe Model. It's not flat at all.
Monday, November 29, 2021 - 01:49 | Author: wabis | Topics: FlatEarth, Geodesy, Analysis

Surface of Rotating Water as Proof of Gravity

"Water can bend". The surface of water in a rotating fish tank has a parabolic shape, it is not flat. The shape is determined by external forces or accelerations, one of them is gravity. Knowing the forces we can calculate how water bends. Measuring the shape of the water surface we can even measure the gravitational acceleration g.
Tuesday, November 9, 2021 - 16:04 | Author: wabis | Topics: FlatEarth, Mathematics, Physics, Simulation

GPS Flight Data and the Shape of the Earth

GPS Flight Data proves that the earth is not Flat, using Modus Tollens Logic. GPS data shows that Airplanes drop their Nose 1° per 111.2 km. Assuming that GPS data is recorded on a Flat Earth results in Impossible Speeds and Accelerations over Antarctica. The GPS Flight Data Visualisation App can be used to analyze GPS Flight Data.
Wednesday, September 29, 2021 - 01:01 | Author: wabis | Topics: Aviatic, Geodesy, Interactive, FlatEarth

How Airplanes follow the Curvature of the Earth, Physics Simulation

The design and physics of airplanes is such that they hold a certain trimmed altitude and speed, following the curvature of the earth automatically, even without any intervention of the pilot or autopilot system. Pilots don't have to drop the nose to correct for curvature. The interactive physics simulation of an airplane on this page shows how this works. The physics model and the corresponding behavior of the airplane are explained. The Source code and the equations are described in detail.
Wednesday, July 7, 2021 - 23:52 | Author: wabis | Topics: Knowlegde, Interactive, Physics, Simulation, FlatEarth

Is the Constellation Big Dipper visible from Antarctica?

Some Flat-Earther found on a webcam image from Antarctica a star constellation that resembler the Big Dipper.

Since the Big Dipper cannot be seen on Earth from Antarctica, these flat-earthers believe they have found evidence of their flat-earth model. Here I show that the constellation they found is not the Big Dipper, but part of the constellation Sagittarius.

Thursday, May 6, 2021 - 23:07 | Author: wabis | Topics: FlatEarth, Astronomy, Knowlegde

M.A.G.E. - Mission Above Globe Earth, Image Analysis

Mr Sensible conducted a high altitude ballon experiment that contained 3 cameras, a pressure and a temperature sensor and a GPS device. The goal was to record pressure, temperature and altitude, as well as to show the curvature of the earth to an altitude up to 39,000 m. The altitude was almost reached.

Video: MAGE II - What shape is the Earth?; M.A.G.E. - Mission Above Globe Earth - The final results!

On this page I compare the curvature of the horizon with the predicted curvature of my Curvature App. The curvature shown in the video linked above matches exactly with the prediction of the Curvature App, which is based on a globe with radius 6371 km. This means, the observed curvature of the horizon is caused by the spherical shape of the earth.

Sunday, November 1, 2020 - 23:00 | Author: wabis | Topics: Science, Experiment, Physics, Balloon, Analysis

Lens Distortion and the Curvature of the Earth

When using distorting lenses like GoPro fisheye lenses, the curvature of the horizon is not shown correctly, except if the horizon line passes through the center of the image. The App on this page lets you investigate how different shapes are distorted by different lens distortions depending on their position in the frame.
Thursday, October 22, 2020 - 00:18 | Author: wabis | Topics: Knowlegde, Simulation, Interactive, Geometry

Satellite Distance from Angle Measurements for Globe and Flat Earth

Using angle measurements to visible geostationary satellites like the Himawari 8 from two different locations we can calculate the position, altitude and distance of the satellite for the Globe and Flat Earth model. I provide a calculator to make the calculations for both models and show the results in an interactive animation. All math is explained in detail. The results show that the Flat Earth model is wrong.
Sunday, September 13, 2020 - 07:53 | Author: wabis | Topics: Knowlegde, Space, Geometry, Calculator, Interactive, Animation

How Airplanes correct for the Coriolis Effect

I show with an interactive model how the Coriolis Effect emerges in the rotating reference frame of the earth. I show how airplanes take the Coriolis Effect into account and how they manage to keep up with different tangential speeds at different latitudes. I provide all equations and calculators to calculate the corrections airplanes have to apply. I show that the Coriolis Effect is small enough so it can be ignored in flight planning.
Wednesday, September 2, 2020 - 22:39 | Author: wabis | Topics: Knowlegde, Physics, Aviatic

Determining the Shape of the Earth with Zenith Angle Measurements

Measuring the shape of the earth using a theodolite without assuming a globe is not trivial, because atmospheric refraction introduces measurement errors which change the appearance of the earth. I describe a method of how the shape of the earth can be determined taking refraction into account.
Wednesday, February 12, 2020 - 03:19 | Author: wabis | Topics: FlatEarth, Mathematics, Science, Calculator

Calculator: Parallax Triangles

The presented Calculator can be used to calculate distances to objects from Parallax measurements. It also can be used for triangle calculations where we only know the baseline, an opposite angle and the point where the height meets the baseline. Also provided is the derivation of the used equations.
Sunday, December 1, 2019 - 23:57 | Author: wabis | Topics: Geometry, Mathematics, Calculator

Gravitational Acceleration and Potential Field of a Cylinder

This page provides a Numerical calculation of the gravitational acceleration and gravitational potential field around and inside a cylinder with homogeneous density. It shows that the gravitational field has no center of gravity like a sphere, but in the limit of big distances it can be treated as a point mass or sphere with the same mass.
Friday, November 22, 2019 - 20:14 | Author: wabis | Topics: Physics, Mathematics, Interactive, Simulation

The Rainy Lake Experiment

The Rainy Lake Experiment was designed to show, how we can figure out the shape of the earth, Flat or a Globe, by observing and measuring a clever arrangement of targets over a distance of 10 km, taking terrestrial refraction into account and using modern equipment. The experiment is an advanced version of the Bedford Level experiment executed in 1838. The Experiment leads to the conclusion that the earth must be a Globe with a radius of 6371 km.

Rainy Lake Experiment Animation
walter.bislins.ch/RainyLakeAnimation

walter.bislins.ch/RainyLake

Short Version of the Report
In a Nutshell, e.g. for Presentations

Saturday, July 20, 2019 - 00:50 | Author: wabis | Topics: FlatEarth, Knowlegde, Science, Experiment

Finding the Curvature of the Earth

With the help of a simulation, I show, up to what altitudes the earth appears flat, although it actually has a spherical shape. Using some animations, you can learn how to recognize the curvature of the earth, or in what circumstances it appears flat. The simulation can also simulate refraction. I prove by means of photos, how the simulation depicts reality, by superimposing the simulation results onto photos.