What is brownian motion?

Brown's movement is a phenomenon where small particles suspended in the liquid tend to move in a psuedo-endom or stochastic liquid, even though the liquid is calm. It is the result of asymmetry in the kinetic effects of molecules that form a liquid. The liquid phase according to the definition must have a certain temperature, which means that its molecules or atoms must be thermally excited, hit together and hang objects. To present this phenomenon, one can imagine moving golf balls on a table filled with thousands of ball bearings moving in fast trajectories. Mathematical movement is related, but more structured than random walk in which the move of the particle is randomized. The phenomenon has Markov's feature , the term of probability theory, which means that the future status of the particle is determined solely by its current state, not the previous state. The mathematical concept is used in this sense is peaceA different but very similar to physical browny movement.

scientist, created by Brownian Motion, is Albert Einstein, who pointed out this phenomenon of a larger physical community by publishing him in 1905 by his personal Annus mirabilis or "beautiful year". This phenomenon was observed as early as 1765, but was not described or described in detail or studied until the research of Botanical Robert Brown in 1827 and is named in honor of his work. As a botanist Brown, he first observed the effect of pollen floating in water, where he is visible to the naked eye. Through experimenting Brown found that the pollen stains were not sending independently, but rather that their movement was psuedo-random.

Jean Perrin, a French physicist who later won the Nobel Prize, discouraged Einstein's work. The use of Brownian's movement as evidence in 1911 showed once and for all for allWell, it is made of atoms and molecules. Although the atomic theory is originally attributed to John Dalton, the British physicists of the 18th and 19th centuries, it was in a dispute for more than a century, and it was Perrin's work that resulted in his universal acceptance.