# The Quantum Atom Weirder and Weirder. Wave-Particle Duality Louis de Broglie (1892-1987)

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<ul><li><p>The Quantum AtomWeirder and Weirder</p></li><li><p>Wave-Particle DualityLouis de Broglie (1892-1987)</p></li><li><p>Wave-Particle DualityLouis de Broglie (1892-1987)De Broglie Hypothesis: Any moving particle has an associated wave nature (1924).Ek=hf true for electrons and all matter</p></li><li><p>Wave-Particle DualityDe Broglie Hypothesis: Any moving particle has an associated wave nature (1924).Ek=hf true for electrons and all matterThis means that light is not the only weird thing, all matter is weirdDe Broglie's Hypothesis tested in 1927 by Cliffton Davisson and Lester Germer of Bell Laboratories. They document electron diffraction</p></li><li><p>Nobel PrizeDe Broglie won in 1929 for his workDavisson and Germer won in 1937 for their work</p></li><li><p>The ImpactDe Broglie's hypothesis meant it was possible to predict the behavior of matter (including subatomic particles) using wave equations</p></li><li><p>The ImpactDe Broglie's hypothesis meant it was possible to predict the behavior of matter (including subatomic particles) using wave equationsThis idea was crucial for the development of quantum mechanics</p></li><li><p>Werner HeisenbergElectrons interact with photons because they have similar wavelengths.</p></li><li><p>Werner HeisenbergElectrons interact with photons because they have similar wavelengths.Photons are used to detect electrons</p></li><li><p>Werner HeisenbergElectrons interact with photons because they have similar wavelengths.Photons are used to detect electronsBecause of the relationship, any attempt to find the velocity and position of an electron causes those quantities to change (the Heisenberg uncertainty principle)</p></li><li><p>Werner HeisenbergElectrons interact with photons because they have similar wavelengths.Photons are used to detect electronsBecause of the relationship, any attempt to find the velocity and position of an electron causes those quantities to change (the Heisenberg uncertainty principle)Nobel prize in Physics 1932</p></li><li><p>Erwin Schrdinger1926 used the dual particle-wave nature to develop wave equations that predicted where electrons were</p></li><li><p>Erwin Schrdinger1926 used the dual particle-wave nature to develop wave equations that predicted where electrons wereOnly waves of specific energies (particular frequencies) fit the equationthis corresponds to the energy levels that Bohr proposed</p></li><li><p>Erwin Schrdinger1926 used the dual particle-wave nature to develop wave equations that predicted where electrons wereOnly waves of specific energies (particular frequencies) fit the equationthis corresponds to the energy levels that Bohr proposedNobel prize in Physics 1933</p></li><li><p>Quantum MechanicsBased on the work of de Broglie, Heisenberg, Schrdinger, Born, Einstein and others</p></li><li><p>Quantum MechanicsBased on the work of de Broglie, Heisenberg, Schrdinger, Born, Einstein and othersAll matter behaves with both particle and wave nature</p></li><li><p>Quantum MechanicsBased on the work of de Broglie, Heisenberg, Schrdinger, Born, Einstein and othersAll matter behaves with both particle and wave natureThe smaller a particle is, the more closely its behavior approaches a wave</p></li><li><p>Quantum MechanicsBased on the work of de Broglie, Heisenberg, Schrdinger, Born, Einstein and othersAll matter behaves with both particle and wave natureThe smaller a particle is, the more closely its behavior approaches a waveQuantum wave equations give probability of finding an electron in a particular energy level (orbital)</p></li></ul>