n So the velocity is given by this product of the quantum number n Planck constant 2 pi mass of the electron time the radius of the orbit, which itself is a function of n.
The practical application here is that the ability to maintain entanglement for a long period oftime is key to building real quantum information networks.
Heisenberg's uncertainty principle, one of the central tenets ofquantum mechanics, maintains that you cannot pin down all the physical properties of a particle at the same time.
