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Nuclear Physics

Concepts of Nuclear Physics

Amy Haywood

on 19 April 2010

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Transcript of Nuclear Physics

Double click anywhere & add an idea Nuclear Physics Models - assessed
in terms of "usefulness" Bohr model
-planetary model of atoms models of light particle model
-composed of tiny particles
"Newton" wave model
-composed of a wave phenomenon
- reinforced by "Young" with interference
- reinforced by "Maxwell" with the EM spectrum
- renforced by "Hertz" with radio waves 1905 - Albert Einstein
Dual natured theory
Quantum theory particles of light
as concentrated bundels of EM energy
- existed as waves but emission and absorption occured
in small chucks called quanta - photons
- direct relationship between photon energy and frequency
- move at the speed of light
- photoelectric effect - ejection of electrons from certain metals scanning electron microscope
- practical use of the wave
nature theory waves can exhibit characteristics of particles
and particles can exhibit characteristics of waves
- "De Broglie" won a Nobel Prize Quantum mechanics
- uncertainties of position
and momentum of a subatomic
particle at high speeds.
- based on probabilities
- Einstein could not accept saying
" I cannot believe that God plays
dice with the universe"
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