In luqadda simmetry: halkaas oo cuf waa la dayaci karaa, physics waa Lorentz invariant sida in relativity gaarka ah halkii invariant Galilei sida in mechanics gaarka ah. (simmetry qeexaya ee relativity gaarka ah waa kooxda Poincaré, oo ay ku jiraan turjumaadaha, wareegyada iyo boosts.) kala duwanaanshaha u dhexeeya labada noqon muhiim ah marka la macaamilayo xawaare ku dhow xawaaraha iftiinka, iyo dhacdooyinka tamarta sare. Iyada oo Lorentz simmetry, dhismayaasha dheeraad ah u soo galaan ciyaaro. Waxay ku qeexan yihiin set of cones iftiinka (conusal image). image The qeexayaa qaab dhismeedka iftiinka caadiga ah ee dhacdo kasta: A, waxaa jira saamayn ku salaysan mabda'a ah ee meel gaar ah halkii invariant Galilei sida in mechanics gaarka ah.
Kooxda Poincaré