Most trigonometry students look at triangles on a flat surface. However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used ...

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Abstract: This paper introduces an innovative educational virtual reality (VR) experience aimed at immersing users in the complexities of spherical geometry. Focused on spherical triangles, navigation ...

real spherical harmonics in Cartesian, projection to spherical harmonics, cos+ (clamped cosine), rotation of zonal spherical functions, dodecahedron triangle fan, icosahedron triangle strip, ...

A movie " Guy makes a big ball out of plywood" has been released that cleverly combines boards of flat flat wood into a sphere and contains a procedure to embellish a superb pattern on the surface.

A simple sphere geometry matching the size of the Jezebel bare sphere core (more info here). This file contains a surface mesh only. A simple sphere geometry matching the size of the Jezebel bare ...

All human beings may have the ability to understand elementary geometry, independently of their culture or their level of education. In a spherical universe, researchers found that Amazonian Indians ...