what does brownian movement have to do with diffusion
Brownian motion There are two parts to Einstein's theory: the first part consists in the formulation of a diffusion equation for Brownian particles, in which the diffusion coefficient is related to the mean squared displacement of a Brownian particle, while the second part consists in relating the diffusion coefficient to measurable physical quantities.[5] In this way Einstein was able to determine the size of atoms, and how many atoms there are in a mole, or the molecular weight in grams, of a gas.[6] In accordance to Avogadro's law this volume is the same for all ideal gases, which is 22.414 liters at standard temperature and pressure. The number of atoms contained in this volume is referred to as Avogadro's constant, and the determination of this number is tantamount to the knowledge of the mass of an atom since the latter is obtained by dividing the mass of a mole of the gas by Avogadro's constant.
Civil rights movement (1896–1954) Among the most prominent was Norris Wright Cuney, the Republican Party chairman in late 19th century Texas. These gains led to substantial discomfort among many white voters, who generally supported the Democrats. During the 1888 Texas Republican Convention, Cuney coined the term lily-white movement to describe efforts by white conservatives to oust blacks from positions of party leadership and incite riots to divide the party.[4] Increasingly organized efforts by this movement gradually eliminated black leaders from the party. The writer Michael Fauntroy contends that the effort was coordinated with Democrats as part of a larger movement toward disenfranchisement of blacks in the South at the end of the 19th and beginning of the 20th century by increasing restrictions in voter registration rules.[5]