🌐EnglishEnglishDeutschItalianoNederlandsРусскийالعربيةفارسیहिन्दी中文日本語EntityQ1715792· pop 22· linked from 38 articlesvelocity-addition formulaequation used in relativistic physicsConnectionsLorentz transformationEntityrefractive indexEntityCategoriesEquationsHarv and Sfn no-target errorsKinematicsSpecial relativityVelocity