PHYS 121 Chapter Notes - Chapter 11: Botany, Radiant Energy, Periodic Table
22 Oct 2017
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Atomic idea was revived in the early 1800s by an english meteorologist and. In 1827, a scottish botanist named robert brown was studying grains of pollen. Brownian motion suspended in water when he saw that the grains were continuously moving and jumping liquid that results from their bombardment by the fast-moving atoms or molecules of the gas or liquid. Albert einstein explained the brownian motion in 1905, the same year he announced the theory of special relativity. There are about 100,000,000,000,000,000,000,000 (10^23) atoms in a gram of water. Anyone on earth who inhales a breath of air will take in, on the average, one of speed of sound the atoms they exhaled. Atomic imagery (11. 3) use to look with. Atoms are too small to be seen with visible light. Due to diffraction, you can discern details no smaller than the wavelength of light you. Because atoms can"t be seen, we construct a model to help us visualize the structure.
