# Bohr's Orbit

#### roshan2004

If electron waves weren't standing waves in Bohr's circular orbit, why and how would the waves interfere ?

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#### vanhees71

The only theory, withstanding so far any test (and there are very hard tests!) to disprove it, is modern quantum theory with the Born probability interpretation of the states, which in certain special cases of non-relativistic quantum theory can be described by "wave functions", which obey a partial differential equation with wave-like solutions. However, these wave functions are not to be confused with classical fields, because they have a probabilistic meaning, i.e., their square $|\psi(t,\vec{x})|^2$ is the probability distribution to find a particle at the position $\vec{x}$ when measured at time $t$ (provided the particle is prepared in the state, described by this wave function).