4.0 Elements and Atoms throughout the ages 4.1 The plum pudding atom model of J.J. Thomson
Particle Physics A Quick Tour. Models of the Atom Thomson – Plum Pudding Why? Known that negative...
Transcript of Particle Physics A Quick Tour. Models of the Atom Thomson – Plum Pudding Why? Known that negative...
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Particle Physics
A Quick Tour
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Models of the Atom Thomson – Plum Pudding
Why? Known that negative charges can be removed from atom.
Problem: just a random guess
Rutherford – Solar System Why? Scattering showed hard core. Problem: electrons should spiral into nucleus in
~10-11 sec.
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Bohr – fixed energy levels Why? Explains spectral lines. Problem: No reason for fixed energy levels
deBroglie – electron standing waves Why? Explains fixed energy levels Problem: still only works for Hydrogen.
Schrodinger – will save the day!!
Models of the Atom
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Einstein’s Nobel Prize
1905: Einstein explained the photoelectric effect, which earned him the Nobel Prize in 1921.
Light is made of
tiny packets of
light, called
photons.
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Atomic Structure
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The Smallest Atom: H
Electron
Photon
Quarks
Gluons
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Matter and Antimatter
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Bosons
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Pulling Quarks Apart
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Colliding Protons
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ATLAS Detector
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Baryons and Mesons
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