electrostatics lens
type: Concept
preferred label: عدسی الکتروستاتیک @fa
related: hyperbolic coordinates

hyperbolic coordinates
type: Concept
broader: coordinate geometry
preferred label: مختصات هذلولوی @fa
related: electrostatics lens

coordinate geometry
type: Concept
narrower: hyperbolic coordinates
preferred label: هندسه مختصاتی @fa