Click Here to Download: https://ouo.io/EvF3Vq Brownian Movement and Molecular Reality By: Jean Perrin Publisher: Dover Publications Print ISBN: 9780486442570, 0486442578 eText ISBN: 9780486174723, 0486174727 Pages: 112 Format: EPUB Available from $ 37.50 USD SKU 9780486174723 How do we know that molecules really exist? An important clue came from Brownian movement, a concept developed in 1827 by botanist Robert Brown, who noticed that tiny objects like pollen grains shook and moved erratically when viewed under a microscope. Nearly 80 years later, in 1905, Albert Einstein explained this Brownian motion as the result of bombardment by molecules. Einstein offered a quantitative explanation by mathematically estimating the average distance covered by the particles over time as a result of molecular bombardment. Four years later, Jean Baptiste Perrin wrote Brownian Movement and Molecular Reality, a work that explains his painstaking measurements of the displacements of particles of a resin suspended in water
