How can a photon have momentum?

Physics students often ask how it is that a massless photon can have momentum. In this video, Fermilab’s Dr. Don Lincoln shows that the question arises from a misuse of equations and also shows that, when you think about it, it’s not surprising at all. Why E = mc2 is wrong:    • Why E=mc² is wrong   The origins of mass:    • The Origins of Mass   Further reading: https://opentextbc.ca/universityphysi... http://hyperphysics.phy-astr.gsu.edu/... Fermilab physics 101: https://www.fnal.gov/pub/science/part... Fermilab home page: https://fnal.gov