Question
A system’s bound states correspond to the imaginary poles of a matrix describing this process. For 10 points each:
[10m] Name this process whose “amplitudes” are the elements of that unitary matrix. A cross section typically measures the probability of this process occurring.
ANSWER: scattering [prompt on word forms of deflections or word forms of collisions] (Elements of the S-matrix are scattering amplitudes. More generally, a cross section is the probability of any given process occurring in a collision of two particles.)
[10h] This scientist approximated the scattering amplitude as proportional to the Fourier transform of the potential. He is the alphabetically [emphasize] prior namesake of an approximation that treats the wavefunctions of nuclei and electrons separately.
ANSWER: Max Born (The approximations are the Born approximation and the Born–Oppenheimer approximation, respectively.)
[10e] This type of scattering named for a Lord explains why the sky is blue.
ANSWER: Rayleigh scattering
<Forrest Weintraub, Science - Physics> ~23795~ <Editor: David Bass>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 PACE NSC | 06/08/2024 | Y | 36 | 14.17 | 86% | 19% | 36% |