Packet 7: Bonus 20
In 1999, Zeilinger et al demonstrated this property can be observed in carbon-60 buckyballs. For 10 points each:
[10m] Name this property. Electrons’ behavior in the Davisson-Germer experiment proved they exhibit this property, validating the de Broglie hypothesis that all matter displays it.
ANSWER: wave-particle duality [accept any answer describing something being both a wave and a particle; prompt on wavelike or wave nature or behaving like a wave by asking, "which also behaves like what else?”; prompt on duality or complementarity; prompt on interference by asking “what property of matter causes the interference?”]
[10h] Zeilinger shared the Nobel Prize in Physics for establishing violations of inequalities named for this physicist, which per his namesake theorem rules out all local hidden variable theories.
ANSWER: John Stewart Bell [or Bell inequalities or Bell’s theorem]
[10e] Zeilinger’s co-winner, yachting enthusiast John Clauser, tested the Bell inequalities with an apparatus that only fired two of these particles a week, then took a months-long boating trip while waiting for his results. These particles are the quanta of light.
ANSWER: photons
<Science - Physics, Rohan Kher> | VAULT II Packet 07
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 32 | 19.69 | 97% | 59% | 41% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Chapel Hill A | East Chapel Hill | 10 | 0 | 10 | 20 | ME |
| Chapel Hill B | Tantaene Animis Caelestibus Irae | 0 | 0 | 0 | 0 |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 2 | 25.00 | 100% | 100% | 50% |
| Triangle Cup | 2026-03-13 | ✓ | 2 | 10.00 | 50% | 50% | 0% |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 10.00 | 100% | 0% | 0% |
| VAULT II at McGill | 2026-03-13 | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 26.00 | 100% | 60% | 100% |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 16.67 | 100% | 67% | 0% |
| VAULT II Southern UK | 2026-04-24 | ✓ | 2 | 15.00 | 100% | 0% | 50% |
| VAULT II at Harvard | 2026-04-30 | ✓ | 2 | 25.00 | 100% | 100% | 50% |
| VAULT II at MINT | 2026-06-19 | ✓ | 3 | 13.33 | 100% | 33% | 0% |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 8 | 23.75 | 100% | 75% | 63% |