Spherical geometry apparatus

Abstract

An apparatus (100) for performing spherical geometry is disclosed. The apparatus (100) includes a frame (102) having a base (104) and a sphere set (106) placed on the base (104). The sphere set (106) includes an outer sphere (108) having a transparent surface and an inner sphere (110) having a surface representing a graph template, which includes azimuth and polar angle scales. The inner sphere (110) is held in a default static orientation with reference to the base (104) and is concentric with reference to the outer sphere (108) by a levitating arrangement. The outer sphere (108) is supported on the base (104) and is rotatable in any direction independent of the inner sphere (108) for determining spherical geometry measurements based on the graph template.

Dependencies are inferred from the claim text.