I’m struggling to understand how probabilities other than strictly 50/50 can arise in the Many-Worlds Interpretation (MWI) of quantum mechanics when the wavefunction appears to split into exactly two worlds during measurement. For example, consider measuring the spin of an electron in the state $...

I just stumbled upon this question. For massive particles like an electron, it is easy to make them follow a non-geodesic path by applying an external force. In case of the electron, one can put it under some electric field so it undergoes accelerated motion. I wonder if it is possible to make ma...

To calculate the total displacement for a time dependent velocity, one can start from an infinitesimal displacement and integrate as follows $$dx=vdt$$ $$ \int_{x_i}^{x_f}dx= \int_{t_i}^{t_f}vdt $$ $$ x_f-x_i=\Delta x=\int_{t_i}^{t_f}vdt $$ My question is when we do the same thing for the calcula...