Johannes Stark Positive Quotations

However, cases came to light later in which canal rays containing only positive ions showed a Doppler effect in the spectral lines emitted by them.

An external electric field, meeting it and passing through it, affects the negative as much as the positive quanta of the atom, and pushes the former to one side, and the latter in the other direction.

Thus at the beginning of 1906 it seemed to be established that the emitters of the spectral series of chemical elements are their positive atomic ions.