javascript

https://www.metabunk.org/curve/ To use it you just put in the distance to the object in miles and your height above the surface in feet. The Metabunk curve calculator was written to provide a simple answer to the question: "how much of a distant object is hidden by the curve of the earth from...

Sometimes graphs are presented with a logarithmic vertical scale. This is useful for seeing the detail in the smaller range, but can give a misleading impression about how much a value is changing. I wrote a no-frills tool to convert such images. It take as input a URL of a cropped portion of a...

Walter Bislins has created a very useful tool for visualizing what things should look like from certain positions, and with certain camera settings, on the Globe Earth, or on a hypothetical Flat Earth. The Simulator includes recreations of classic and modern experiments and observations...