Johannes Stark
Johannes Stark
Johannes Starkwas a German physicist and Physics Nobel Prize laureate, who was closely involved with the Deutsche Physik movement under the Nazi regime...
ProfessionPhysicist
Date of Birth15 April 1874
positive negative atoms
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.
discovery light facts
At the head of these new discoveries and insights comes the establishment of the facts that electricity is composed of discrete particles of equal size, or quanta, and that light is an electromagnetic wave motion.
atoms done may
If the experimental physicist has already done a great deal of work in this field, nevertheless the theoretical physicist has still hardly begun to evaluate the experimental material which may lead him to conclusions about the structure of the atom.
views atoms lines
In my view the structure of the whole atom was that of an individual, with all its parts interconnected, and the emission of a spectral line appeared to me to be the result of the coherence and co-operation of several electric quanta.
discovery atoms facts
The discovery of various phenomena has led to a recognition of the fact that the chemical atom is an individual which again is itself made up of several units into a selfcontained whole.
expression important different
The most common and most important result of them is that the nature and size of the effect on corresponding series of different elements are largely an expression of the peculiarity of their atomic structure - or, at least, of the structure of the surface.
greek mind ancient
The question of the composition of perceptible objects is one which already occupied the mind of the ancient Greeks.
atoms century structure
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.
atoms compounds exception
The emitters of the spectral series are without exception single atoms, not compounds of atoms.
lines may principles
The movement of the emitters of the spectral lines may be deduced on the basis of the Doppler principle.
individuality doe different
Moreover, the abundance of chemical compounds and their importance in daily life hindered the chemist from investigating the question, in what does the individuality of the atoms of different elements consist.
chemical elements positive seemed series thus
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.