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CHM348Midterm1
Midterm 1
Question | Answer |
---|---|
What are the 3 process associated with light/matter interactions? | Spontaneous emission, Absorption, Stimulated emission |
Be able to identify the Einstein rate coefficients | See flash card 4 |
Be able to identify all terms in Beer's law | See flash card 5 |
Identify all terms in the expression for the absorption cross section. See flash card 1. | See flash card 6 |
Why are "student-t" factors required in the evaluation of errors? | |
What is X squared? | |
Identify all terms in this equation see flash card 2. | |
A "1sigma" error limit corresponds to what % confidence limit? | |
Give an example of a source of systematic and random errors in any of the three experiments we performed. | |
Consider the model Y=ax+b. What are the two elements of the Jacobian matric at x=1.0? | |
Identify all terms in this eq. See flash card 3. | |
What is meant by "Quantum Confinement"? | |
Briefly describe the three models (particle in box, particle is sphere and "Brus's model") used to describe the electronic absorption spectrum of quantum dots. | |
What is an "excitron" | |
Is the onset of energy of the photon associates with the onset of absorption a QD higher or lower than the band gap of bulk material? |