Bern Switzerland, August 18, 1905

Einstein's ninth paper, A New Determination of Molecular

Dimensions, Annalen der Physik 19: 289-305.

This document is Einstein's doctoral dissertation, resubmitted in the spring of 1905 after he withdrew his first submission in 1902. Here he combined the techniques of classical thermodynamics with those of the theory of diffucsion to create a new method for determining molecular sizes.

He wanted to discover facts that would establish once and for all the existence of atoms of a specific finite size, since at the turn of the century the atom's existence was still in contention.

After he submitted his copy of the thesis to the University of Zurich, his petition to receive the doctorate was approved.