Earth Sciences 2123F/G Lecture 1: Earth Science 2123
30 Nov 2017
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Document Summary
A way to describe things that are very small or very large compared to our human perspective which is 0. Greeks in the 5th century proposed things were made up of tiny, indivisible, particles in. History of the atom constant motion. (atoma = indivisible) aristotle, did not accept this idea; instead he thought earth way made of ear, fire, air and water therefore atomic theory was ignored. John dalton proposed idea of element where all atoms of one element have same size and weight and that they unite chemically in simple numerical ratios to for compounds. subatomic particle). This discovery lead to the proposal of the plum- pudding model for the atom. Jj thomson discovered the electron ( a negatively charged. E. rutherford expanded this saying that there was a positively charged nucleus surrounded by negatively charged electrons orbiting it with mostly empty space. He discovered this through the gold foil experiment.
