Question
Benjamin Franklin spread a teaspoon of oil over a pond to create one of these physical structures. For 10 points each:
[10e] Oil spilled on water exemplifies what “thin” monolayers, whose namesake “interference” causes iridescence?
ANSWER: thin films [accept film interference]
[10h] A chemist in this family built on Franklin’s work to construct the first Langmuir–Blodgett trough. Another scientist in this family names the effect by which a material’s index of refraction varies linearly with the electric field, which is similar to the Kerr effect.
ANSWER: Pockels [accept Agnes Pockels or Friedrich Carl Alwin Pockels]
[10m] The Pockels point is the minimum for this quantity for a molecule in a film. Surface tension equals interfacial free energy divided by this quantity.
ANSWER: surface area [or interfacial area]
<Adam Silverman, Science - Physics> ~22139~ <Editor: David Bass>
Data
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
|---|---|---|---|---|---|
| Heights | Innovation Academy A | 0 | 0 | 0 | 0 |
| Hunter A | Johns Creek A | 10 | 0 | 0 | 10 |
| Kinkaid | Belmont | 0 | 10 | 0 | 10 |
| Winston Churchill A | Hoover A | 10 | 0 | 10 | 20 |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 PACE NSC | 06/08/2024 | Y | 4 | 10.00 | 50% | 25% | 25% |