A mathematical vector used in physics to describe both the energy and momentum of an object in one combined quantity.

ऊर्जा संवेग सदिश

English Usage: The energy momentum vector is crucial in the study of relativistic physics.

Hindi Usage: ऊर्जा संवेग सदिश सापेक्षिक भौतिकी के अध्ययन में महत्वपूर्ण है।