A beam of luminous hydrogen canal rays has, owing to its velocity, exactly the same direction as that of the electric field in which it may be made to move.
Johannes StarkThe removal of an electron from the surface of an atom - that is, the ionization of the atom - means a fundamental structural change in its surface layer.
Johannes StarkThe question of the composition of perceptible objects is one which already occupied the mind of the ancient Greeks.
Johannes StarkThe emitters of the spectral series are without exception single atoms, not compounds of atoms.
Johannes Stark