Abstract
IT is well known that, in Dirac's quantum-mechanical theory of the electron, the only elgen-values of the velocity-component operators are ± c. That is why the laws of motion of a spin-particle moving with the velocity of light attract attention even from the point of view of classical relativity theory. Henceforth such a motion will be referred to as the second case, whereas the motion discussed in the preceding communication will be called first case. The second case may be considered in a certain sense as a limiting case of the first but, in any event, it is not simply the limit of the first when v tends to c at constant proper mass m0 and constant proper angular momentum s0
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
