NEILS BOHR AND THE ATOMIC THEORY

WHO IS NEILS BOHR???

• Neils Bohr was a Danish physicist
• Born October 7 1885 in Copenhagen,Denmark
• Died November 18 1962
• Known for: Bohr model, atomic theory

HOW'D HE GET SO SMART??

• His father was a professor of physiology at Cambridge
• 1903 entered Copenhagen University under Prof. Christiansen
• Doctorate degree in physics in 1911
• Began experimenting at Cambridge

WHAT DID HE DISCOVER? HOW?

• Bohr discovered the Bohr model
• This model shows electrons orbiting around a nucleus of protons and neutrons
• He also did some work that clarified aspects of quantum mechanics
• He made his discovery in 1913 by using Quantum Theory
• He balanced electric charge between electrons and nucleus

WHAT DOES THIS HAVE TO DO WITH DEMOCRITUS?

• Democritus came up with the Atomic Theory 2400 years ago
• His theory states the atom as the smallest unit of matter
• His theory became the basis for all future advances, including Bohr's
• Bohr's model dealt with the units within the atom, which Democritus didn't believe existed
• Bohr was one of the many scientists who helped shape Democritus' early theory

WHAT DOES THIS HAVE TO DO WITH ME?

• Bohr identified the structure of the atom
• This model is a known concept throughout education
• Helps us understand how an atom and it's protons, neutrons, and electrons relate

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