"Lorentz transformation." YourDictionary, n.d. Web. 19 January 2019. <https://www.yourdictionary.com/lorentz-transformation>.
Lorentz transformation. (n.d.). Retrieved January 19th, 2019, from https://www.yourdictionary.com/lorentz-transformation
A linear map that expresses the time and space coordinates of one reference frame in terms of those of another one. Much like simple rotations, which leave the lengths of objects unchanged while transforming their coordinates, Lorentz transformations leave unchanged the expression c2t2 − x2 − y2 − z2, where c is the speed of light, and the other variables are space-time coordinates.