Copyright © 2015, W. W. Norton & Company
Prepared by Dr. Mai Khaleel,
Isra University
Lecture Slides
CHAPTER 1: Electrons, photons, and atoms
Physics of Atoms and Molecules
B. H. Bransden (Author), Charles J.
22/03/2021
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Atomic Models: A Historical Overview and Introduction to Atomic Structure, Lecture notes of Physics
atomic and molecular physics for undergraduate students. physics major
Typology: Lecture notes
2020/2021
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Copyright © 2015, W. W. Norton & Company Prepared by Dr. Mai Khaleel, Isra University Lecture Slides CHAPTER 1: Electrons, photons, and atoms Physics of Atoms and Molecules B. H. Bransden (Author), Charles J. 22/03/
Topics
- Atomic Models
Who are these men?
500 BC, Democritus
- Matter is made of discrete particles.
- He named the smallest piece of matter “Atomos,” meaning “not to be cut.”
1808 Dalton The “ Billiard Ball ” Model Matter composed of small spherical particles.
1808 Dalton Dalton’s hypothesis: a. The matter are composed of discrete atoms. b. For a given matter these atoms are all identical and each atom has the same weight. c. compounds are formed when atoms of different matters combine in a simple ratio Dalton’s hypothesis is taken as the first discovery of the atomic nature of matters.