Question

A coefficient named for this process is zero for a perfect balun (“BAL-un”) to allow efficient power transfer. In two-port systems, the S-one-one parameter is the value of a coefficient named for this process for the input port voltage. A coefficient named for this process is zero at the center of a (10[1])Smith chart. (10[1])A short circuit (-5[2])has a value of minus one for a coefficient (-5[1])named for this process. A coefficient named for this process (-5[1])equals [read slowly] “Z-load minus Z-naught over Z-load (10[1]-5[1])plus Z-naught,” (10[1])since this process occurs when an impedance (10[1])mismatch is present. A coefficient named for this process is the ratio of the amplitude of an outgoing wave to (-5[2])the amplitude of the incident wave. (10[1])Lambert’s (10[1])cosine (10[1])rule (-5[1])describes (10[1])the diffuse form of (10[3])this process. For 10 points, name this process whose specular form (10[1])may occur when light hits (10[1])a glossy (10[7])surface. ■END■

ANSWER: reflection [accept reflection coefficient or diffuse reflection or specular reflection]
<Physics>
= Average correct buzz position

Summary

2025 ACF Nationals04/19/2025Y21100%0%38%118.43

Buzzes

PlayerTeamOpponentBuzz PositionValue
Adam FineChicago AMichigan5010
Colin VeeversOttawaNorth Carolina A5210
Calvin BostlemanOhio StateGeorgia State55-5
Shardul RaoMinnesotaColumbia A55-5
David BassJohns HopkinsNorthwestern64-5
Swapnil GargUC Berkeley AWaterloo B74-5
Charles HangWUSTL ACornell B82-5
Noah ChinVirginia TechUC Berkeley B8210
Liam KusalikWaterloo ACornell A8410
Alex AkridgeIndianaYale9110
Leo LawFloridaIowa State111-5
Shiva TegullaUCFStanford111-5
Yash MandaviaIllinois BMIT11710
Ezra SantosChicago BPenn State11810
William GrogerColumbia BArizona State11910
John John GrogerWUSTL BWinona State120-5
Andrew WangIllinois ARIT12110
Kunaal ChandrashekarToronto BBritish Columbia12510
Rohan DalalGeorgia TechNorth Carolina B12510
Kushal AluruRutgersToronto C12510
Isaac MammelMarylandVanderbilt13610
Geoffrey WuColumbia AMinnesota14110
Conor ThompsonIowa StateFlorida14310
Matt SchiavoneNorthwesternJohns Hopkins14310
Caleb OttWaterloo BUC Berkeley A14310
Amogh KulkarniGeorgia StateOhio State14310
Sarod NoriCornell BWUSTL A14310
Henry BonWinona StateWUSTL B14310
Michał GerasimiukStanfordUCF14310