Robert Brown was a Scottish botanist who worked as a librarian at various scientific institutions in London. With the discovery of the cell nucleus - chemistry homework helper , he created an important foundation for cell theory. His most significant scientific achievement was the discovery of the irregular movement of minute corpuscles visible under the microscope. It is now known as Brownian motion.
Robert Brown's early work was concerned with studies of mosses, which at that time had been little studied. He also examined the seed plants of many plants and carried out many microscopic examinations. In the process, he repeatedly discovered a small body in the cells, which he called the "nucleus". He had thus discovered the cell nucleus and in this way laid an important foundation for the development of cell theory.
The discovery that made him famous was made in 1827 and lies outside the field of botany. While examining pollen that was in water, Brown noticed under the microscope that the dust particles moved completely irregularly and randomly. The irregular motion and microscopically observable corpuscles was named Brownian motion - https://domyhomework.club - in his honor. Brownian motion occurs because microscopically invisible particles (atoms, ions, molecules) are in constant motion, bumping the microscopically visible corpuscles and leading to their irregular motion.
Thus Brown's motion is a proof of the existence of smallest invisible particles - https://domyhomework.club/science-homework/ (atoms, molecules). Brown himself found and described only the phenomenon. An explanation was given only in 1905 - thus about 80 years later - by the famous German physicist Albert Einstein (1879-1955).