from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A vector in four-dimensional vector space, especially one having three spatial and one temporal dimensions


Sorry, no etymologies found.


  • The expression for this action A is where where is the four-vector position of the ith particle as a function of some parameter.

    Richard P. Feynman - Nobel Lecture

  • It would also spoil the Lorentz invariance by itself because the entropy density is a time component of a four-vector (am entropy current) and its nonzero

    The Reference Frame


Log in or sign up to get involved in the conversation. It's quick and easy.