It is more likely that more than a century will pass before we know the structure of the chemical atoms as thoroughly as we do our solar system.

With this in mind, for some twenty years I have set myself as my particular task the experimental investigation of the connexion between change in the structure and change in the spectra of chemical atoms.

Many scientists will have to contribute to the solution of the great problem; they will have to follow up and measure all those phenomena in which the atomic structure is directly expressed.

Johannes Stark Quotes