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01-19-2011 Lecture Notes (1)

# 01-19-2011 Lecture Notes (1) - de Broglie Schrdinger...

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The Quantum Mechanical Model of the Atom de Broglie Schrödinger 1933 Nobel Prize in Physics for the discovery of new productive forms of atomic theory 1929 Nobel Prize in Physics for his discovery of the wave nature of electrons Heisenberg 1932 Nobel Prize in Physics for the creation of quantum mechanics Developed a new view of the atom that treated the electron as having wave properties and became known as Quantum Mechanics

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The Heisenberg Uncertainty Principle Heisenberg identified a fundamental limitation in our ability to know both the position and the momentum of a particle at a given time. Δ x Δ p > h/4 π where Δ x is uncertainty is particle’s position Δ p is uncertainty in particle’s momentum Δ p = m Δ v h = Planck’s constant = 6.626 x 10 -34 J s The more accurately we know a particle’s position, the less accurately we know the particle’s momentum The smaller the particle, the more pronounced this uncertainty becomes
The Heisenberg Uncertainty Principle What is the uncertainty in the position of a marble with a mass of 1.0 g if you know its velocity to ±1.0 mm/s?

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01-19-2011 Lecture Notes (1) - de Broglie Schrdinger...

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