Quantum Theory Historical Reference
... 2. Thomas Young: a) diffraction pattern proved wave nature of light - in-phase, out-of-phase waves - constructive, destructive interference - diffraction pattern 3. James Clerk Maxwell: EMR – energy traveling through space in the form of an electric field perpendicular to a magnetic field. pp 180 – ...
... 2. Thomas Young: a) diffraction pattern proved wave nature of light - in-phase, out-of-phase waves - constructive, destructive interference - diffraction pattern 3. James Clerk Maxwell: EMR – energy traveling through space in the form of an electric field perpendicular to a magnetic field. pp 180 – ...
ELECTRONIC STRUCTURE OF ATOMS
... The ground state is the lowest energy state . An electron in a higher state is said to be in an excited state. Colors from excited gases(street lights) arise because electrons move between energy states. Since energy states are quantized, the light emitted must be quantized and appear as a line ...
... The ground state is the lowest energy state . An electron in a higher state is said to be in an excited state. Colors from excited gases(street lights) arise because electrons move between energy states. Since energy states are quantized, the light emitted must be quantized and appear as a line ...
453 Introduction to Quantum Mechanics (Winter 2005)
... Assuming that the number of free electrons per unit area is σ, calculate the Fermi energy for electrons in a two-dimensional infinite square well. 7. The most prominent feature of the hydrogen spectrum in the visible region is the red Balmer line, coming from the transition n = 3 to n = 2. i) Determ ...
... Assuming that the number of free electrons per unit area is σ, calculate the Fermi energy for electrons in a two-dimensional infinite square well. 7. The most prominent feature of the hydrogen spectrum in the visible region is the red Balmer line, coming from the transition n = 3 to n = 2. i) Determ ...
Handout
... system. For instance for a Hydrogen atom, we can find that there are energy levels labelled by an integer n with energy En = −1 Ry × n12 , 1 Ry = 13.6 eV. This allows us to predict ...
... system. For instance for a Hydrogen atom, we can find that there are energy levels labelled by an integer n with energy En = −1 Ry × n12 , 1 Ry = 13.6 eV. This allows us to predict ...
Ch. 6 notes
... Calculate the energy required to excite the hydrogen electron from level n=1 to level n=2. Also calculate the wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state. ...
... Calculate the energy required to excite the hydrogen electron from level n=1 to level n=2. Also calculate the wavelength of light that must be absorbed by a hydrogen atom in its ground state to reach this excited state. ...
QM-01
... wavelength λ on them with photon momentum pphoton = h/λ . If we manage to see an electron it will be because one of these photons has struck it. Clearly the electron momentum will be affected by this interaction with the photon. Let the change in the electron's momentum is ∆pelectron and certainly i ...
... wavelength λ on them with photon momentum pphoton = h/λ . If we manage to see an electron it will be because one of these photons has struck it. Clearly the electron momentum will be affected by this interaction with the photon. Let the change in the electron's momentum is ∆pelectron and certainly i ...
Chapter 27: Summary
... behavior of such particles is very different from the behavior of everyday objects. Among other things, these tiny objects exhibit both a wave nature and a particle nature. Black body radiation Black body radiation is the radiation, in the form of electromagnetic waves, which emanates from a warm ob ...
... behavior of such particles is very different from the behavior of everyday objects. Among other things, these tiny objects exhibit both a wave nature and a particle nature. Black body radiation Black body radiation is the radiation, in the form of electromagnetic waves, which emanates from a warm ob ...
introduction to atomic structure
... Bohr’s Postulates: •Electron moves in circular orbits around the nucleus. •Electron can possess only certain energy values corresponding to the orbit. •Electron can “jump” from one orbit to another, the energy difference will be emitted or absorbed in the form of light quanta. ...
... Bohr’s Postulates: •Electron moves in circular orbits around the nucleus. •Electron can possess only certain energy values corresponding to the orbit. •Electron can “jump” from one orbit to another, the energy difference will be emitted or absorbed in the form of light quanta. ...
Quantum Mechanics
... For an electron in an atom, the stationary orbits in the Bohr model has an integral number of wavelengths. 2πrn = nλ ...
... For an electron in an atom, the stationary orbits in the Bohr model has an integral number of wavelengths. 2πrn = nλ ...
Postulate 1
... de Broglie, Waves and Electrons: • The work of de Broglie and others showed that light and subatomic particles had something in common – wave properties. This led Schrodinger, in particular, to wonder whether equations used to describe light waves could be modified to describe the behaviour of elec ...
... de Broglie, Waves and Electrons: • The work of de Broglie and others showed that light and subatomic particles had something in common – wave properties. This led Schrodinger, in particular, to wonder whether equations used to describe light waves could be modified to describe the behaviour of elec ...
Review Sheet
... Kinetic vs. potential energy Enthalpy (H) Measuring heat (q) Specific heat capacity Endothermic vs. exothermic Stoichiometry using energy (using enthalpy of reaction and balanced chemical reactions) Calculating H using Hess’s Law, Enthalpy Diagrams, and/or H° of formations Calorimetry calculations ...
... Kinetic vs. potential energy Enthalpy (H) Measuring heat (q) Specific heat capacity Endothermic vs. exothermic Stoichiometry using energy (using enthalpy of reaction and balanced chemical reactions) Calculating H using Hess’s Law, Enthalpy Diagrams, and/or H° of formations Calorimetry calculations ...
4.8-Quantum Mechanics
... Schroedinger’s wave equation, and Born’s interpretation, can equally be applied to “free” particles, or those which are trapped Classically, a particle trapped in a potential well cannot escape…. ….but a trapped quantum particle (eg a particle in an atomic nucleus) can tunnel out of the well, even w ...
... Schroedinger’s wave equation, and Born’s interpretation, can equally be applied to “free” particles, or those which are trapped Classically, a particle trapped in a potential well cannot escape…. ….but a trapped quantum particle (eg a particle in an atomic nucleus) can tunnel out of the well, even w ...
Torres: Copenhagen Quantum Mechanics
... Probable positions of electrons are not exactly set Based on energy levels ...
... Probable positions of electrons are not exactly set Based on energy levels ...
Objective 6: TSW explain how the quantum
... reflect off of surfaces and that it has a speed • Photoelectric effect: the ejection of electrons from a metal surface when that surface is exposed to electromagnetic radiation of sufficiently high frequency • In 1905 Einstein was able to explain the photoelectric effect by using Planck’s quantum th ...
... reflect off of surfaces and that it has a speed • Photoelectric effect: the ejection of electrons from a metal surface when that surface is exposed to electromagnetic radiation of sufficiently high frequency • In 1905 Einstein was able to explain the photoelectric effect by using Planck’s quantum th ...
Wave
... – The energy of a wave takes discrete values (quanta), because a wave consists of discrete particles. – For example, a laser beam consists of many photons, each carrying the same photon energy. ...
... – The energy of a wave takes discrete values (quanta), because a wave consists of discrete particles. – For example, a laser beam consists of many photons, each carrying the same photon energy. ...
photon may be totally absorbed by electron, but not have enough
... De Broglie’s hypothesis is the one associating a wavelength with the momentum of a particle. He proposed that only those orbits where the wave would be a circular standing wave will occur. This yields the same relation that Bohr had proposed. In addition, it makes more reasonable the fact that the e ...
... De Broglie’s hypothesis is the one associating a wavelength with the momentum of a particle. He proposed that only those orbits where the wave would be a circular standing wave will occur. This yields the same relation that Bohr had proposed. In addition, it makes more reasonable the fact that the e ...
Brief introduction to quantum mechanics
... Solution requires: -Normalization of the wave function according ...
... Solution requires: -Normalization of the wave function according ...
Homework 3
... 1. Explain the terms wavelength and amplitude. If a photon has a frequency of 9 1010 Hz what is its wavelength? Which region of the electromagnetic spectrum does this correspond to? ...
... 1. Explain the terms wavelength and amplitude. If a photon has a frequency of 9 1010 Hz what is its wavelength? Which region of the electromagnetic spectrum does this correspond to? ...
Quantum Mechanics
... • If electrons (and other particles) can act like waves, what else can they do? • They can setup standing waves – Waves with particular wavelength/frequency that appear to not be travelling ...
... • If electrons (and other particles) can act like waves, what else can they do? • They can setup standing waves – Waves with particular wavelength/frequency that appear to not be travelling ...