Lecture Physics A2: Atomic physics - PhD. Pham Tan Thi present the content history of atomic model, quantum mechanical atomic theory, Schrödinger Equation in three dimensions, particle in a three-dimensional box, energy degeneracy, . | Atomic Physics Pham Tan Thi . Department of Biomedical Engineering Faculty of Applied Sciences Ho Chi Minh University of Technology History of Atomic Model History of Atomic Model Proposed an Atomic Theory which states that all atoms are small hard indivisible and indestructible particles made of a single material formed into different shapes and sizes. Aristotle did not support his atomic theory. Democritus 460 BC - 370 BC History of Atomic Model Known as the Father of Modern Chemistry Was the first person to generate a list of 23 elements in his textbook Devised the metric systems Was married to a 13-year-old Marie-Anne Pierette Paulze who assisted him much of his work Discovered proposed that combustion occurs when oxygen combines with other elements Antoine Lavoisier 1743 - 1794 Discovered proposed the Law of Conservation of Mass or Matter which states that in a chemical reaction matter is neither created or destroyed History of Atomic Model In 1803 he proposed an Atomic Theory which states that All substances are made of atoms atoms are small particles that cannot be created divided or destroyed. Atoms of the same element are exactly alike and atoms of different elements are different Atoms join with other atoms to make new John Dalton substances 1766 - 1844 He calculated the atomic weights of many various elements He was a teacher at a very young age He was color blind History of Atomic Model J. J. Thomson 1856 - 1940 He proved that an atom can be divided into smaller parts While experimenting with cathode-ray tubes discovered corpuscles which were later called electrons He stated that the atom is neutral History of Atomic Model J. J. Thomson 1856 - 1940 He proved that an atom can be divided into smaller parts While experimenting with cathode-ray tubes discovered corpuscles which were later called electrons He stated that the atom is neutral In 1897 he proposed Plum Pudding Model which states that atoms mostly consist of positively charged material with .
