What is the Lorentz Transformation? @zapphysics

Uploaded November 2018 | Updated September 2026, 6 hours ago

What is the Lorentz Transformation? It is a tool we use to relate the different experiences of different observers in special relativity. It is also one of the defining features of special relativity and what differentiates it from Galilean relativity. In this video, we will derive the Lorentz Transformation (as well as its inverse) from a simple thought experiment using the principles of length contraction, time dilation and spacetime invariance.

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$What does 1+2+3+... REALLY equal and what does it have to do with particle physics? The sum of natural numbers, 1+2+3+..., is a fairly regularly cited sum to show off the strange nature of mathematics. This is mainly due to the fact that it can (seemingly) easily be shown to be equal to -1/12. Thats right. Not only is the result finite, it is also a fraction as well as negative! This seems completely crazy and thats because there is an important factor of infinity that is hidden from view when proving this in the usual ways. So lets find out what this sum is equal to while still retaining this mysterious hidden infinity. The way of doing this is through what is known as regularization of the series (which is secretly done is the normal way of evaluating this sum as well). This parallels nicely to a technique in physics known as renormalization, where we take infinities that show up like this and hide them in other places, like the masses and charges of particles. This allows us to have finite physics, but we lose the ability to predict these quantities. ► Music Credit: Dj Quads Track Name: Its Near Music By: Dj Quads @ https://soundcloud.com/aka-dj-quads Original upload HERE - https://www.youtube.com/watch?v=UI79n3E1U_g Follow me on Twitter: https://twitter.com/ZapPhysics$