Once a wavefunction has collapsed, can the system change to a new state if we disturb the system?
For example, if we have a particle in a state of well defined energy (e.g. ground state) and then suddenly change the potential of the particle, can it change to a new state (e.g. excited state)...
A harmonic oscillator with frequency ω is in its ground state when the stiffness of the spring is instantaneously reduced by a factor f2<1, so its natural frequency becomes f2ω. What is the probability that the oscillator is subsequently found to have energy 1.5(hbar)f2ω? Thanks
It seems you do grasp the fundamentals. Within a simple circuit, electric field lines run along the length of a resistor from positive to negative, it can be thought of as field lines going from the positive to negative terminal of the cell. Therefore to move an electron from negative to...