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Atom and Light
Atom and Light

... motion between the source and the observer along the line-of-sight. If the relative motion between the source and the observer is moving away from each other, the observed spectral line is longer than the lab wavelength, it is called a redshift. If the relative motion between the source and the obse ...
Chapter 5 Electrons in Atoms
Chapter 5 Electrons in Atoms

Chapter 5 Electrons in Atoms
Chapter 5 Electrons in Atoms

... • Orbitals combine to form a spherical shape. • This orbital can hold up to 14e- ...
Isotopic indistinguishibility, scattering processes and the non mass
Isotopic indistinguishibility, scattering processes and the non mass

Nano-material - McMaster University > ECE
Nano-material - McMaster University > ECE

Introduction to quantum mechanics
Introduction to quantum mechanics

Lecture 11 Atomic Structure Earlier in the semester, you read about
Lecture 11 Atomic Structure Earlier in the semester, you read about

amu (atomic mass unit): a unit used to express very small masses
amu (atomic mass unit): a unit used to express very small masses

... atoms containing many electrons. Bohr's concept of the atom has been replaced by quantum mechanics theory one of the chief difference between these two theories is that in the quantum mechanics theory electrons are not considered to be revolving around the nucleus in orbits, but to occupy "orbitals" ...
Problem Set 1 (Due January 30th by 7:00 PM) Answers to the
Problem Set 1 (Due January 30th by 7:00 PM) Answers to the

Read Notes #1 - Faculty Website Listing
Read Notes #1 - Faculty Website Listing

... uncertainty in energy is related to the time required for the transition (t). An emission with zero uncertainty in energy would require a transition time (t) of infinity (i.e. it would never happen). Thus Quantum Physics is Not Deterministic. It is Probabilistic. We have verified the Heisenberg r ...
C:\SJWfiles\MyFirst Course\exam
C:\SJWfiles\MyFirst Course\exam

... f) The table below gives the electrical and thermal conductivity for zinc and copper at 300K, but has one entry missing. Estimate its value and explain your reasoning. ...
Chapter 2 Some definitions Atoms-Atoms are the smallest particles
Chapter 2 Some definitions Atoms-Atoms are the smallest particles

... We still need to find the number of particles in a mole. There are at least 2 ways to do this. The first is to count electrons in an electric circuit where we produce a metallic element from a solution of its ions. We then determine how much mass formed for a given total charge. The mass of the ele ...
Third example: Infinite Potential Well ∞ ∞
Third example: Infinite Potential Well ∞ ∞

Document
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... • 1926 – Enrico Fermi & Paul Dirac – formulated (independently) the Fermi-Dirac statistics, which describes distribution of many identical particles obeying the Pauli exclusion principle (fermions with half-integer spins – contrary to bosons satisfying the Bose-Einstein statistics) • 1926 – Erwin Sc ...
Few-Body Systems
Few-Body Systems

... excess electron or positron polarizes the neutral molecular core and a large fraction of the binding energy arises from correlation effects. These effects are somewhat similar to dispersion interactions leading to van der Waals interactions and they improve the description of the charge distribution ...
Electronic Structure
Electronic Structure

... All electronic energy levels also converge, and come together at the n=  level. 1. Ionization enthalpy is the energy required to remove an electron from the lowest energy level (ground state, n=1) to the outermost part of the atom (n2 =  ) H(g)  H+(g) + e 2. If sufficient energy is supplied to an ...
September 6th, 2007
September 6th, 2007

... When the basis consist on one atom, there are three independent vibration modes, 1 longitudinal (the atoms in the plane oscillate in a direction perpendicular to the plane) and 2 transversal where the atoms oscillates parallel to the plane (the two modes come from the two dimensions of the plane). W ...
1,0-,1,2 + ½
1,0-,1,2 + ½

... Very reactive ...
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... called atoms Atoms of the same element are identical. The atoms of anyone element are different from those of any other element Atoms of different elements can physically mix together or can chemically combine w/ one another in simple whole-number ratios to form compounds Chemical reactions occur wh ...
Orbitals and Quantum Numbers
Orbitals and Quantum Numbers

S.V. Stepanov
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... corrections) -- e+e- psi-function, minimization of total energy -- E(R), pick-off rate, contact density, equilibrium radius … -- How to link macroscopic and microscopic considerations? ...
Chapter 11
Chapter 11

... is quantized. It comes in chunks.  Quanta - the amount of energy needed to move from one energy level to another.  Quantum leap in energy.  Schrödinger derived an equation that described the energy and position of the electrons in an atom  Treated electrons as waves ...
METALS, SEMICONDUCTORS AND INSULATORS
METALS, SEMICONDUCTORS AND INSULATORS

... reach the boundary of the first Brillouin zone and continue into the second Brillouin zone. However, the second Brillouin zone is equivalent to the first one. This implies that Ψk=-π/a = Ψk=π/a. We can thus shift the Bloch state from A to B in Fig. 7. Then the crystal momentum k starts again to incr ...
lecture 10 (zipped power point)
lecture 10 (zipped power point)

... Classically, light is treated as EM wave according to Maxwell equation However, in a few types of experiments, light behave in ways that is not consistent with the wave picture In these experiments, light behave like particle instead So, is light particle or wave? (recall that wave and particle are ...
Chapter 6: Electronic Structure of Atoms
Chapter 6: Electronic Structure of Atoms

... Limitations to Bohr Bohr model can not explain line spectra beyond the Hydrogen atom (except in crude manner) As we have seen, electrons also have wavelike properties Things kept from Bohr Model: – Electrons exist in certain discrete energy levels described by quantum numbers – Energy is involved i ...
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Tight binding

In solid-state physics, the tight-binding model (or TB model) is an approach to the calculation of electronic band structure using an approximate set of wave functions based upon superposition of wave functions for isolated atoms located at each atomic site. The method is closely related to the LCAO method used in chemistry. Tight-binding models are applied to a wide variety of solids. The model gives good qualitative results in many cases and can be combined with other models that give better results where the tight-binding model fails. Though the tight-binding model is a one-electron model, the model also provides a basis for more advanced calculations like the calculation of surface states and application to various kinds of many-body problem and quasiparticle calculations.
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