I proved the existence of these "invisible molecules" with my paper on Browning motion.
I have contributed to the theory of the atom! I Albert Einstein, in 1905 proved the existence of the 'Atom" mathematically.
I realized that the chaotic movement of these invisible molecules produced statistical fluctuations.
I state that these molecules are always in motion, specifically in ceaseless motion.
In my theory of quanta, I explained the "photoelectric effect." I showed that when the quanta of light energy hits atoms metal, the quanta force atoms to release electrons.
With my calculations, humans could determine the size of atoms and molecules. The idea of heat makes atoms and molecules go in motion was confirmed.
I came to conclusion that once in a while a small group of invisible molecules could move in mostly the same motion, BUT only in a slight moment.