A variation of this technique uses signal averaging to improve signal-to-noise through Jacquinot’s advantage. Detectors made of DLATGS are found in devices for this technique, which often uses matrix isolation. A variant of this technique often paired with ATR generates data in the form of interferograms. Holding up two, three or four fingers is a common mnemonic when analyzing aromatics in this technique. Rows that contain x, y or z in a character table correspond to this technique. A (*) potassium bromide disk or Nujol (“NEW-jull”) mull can be used to prepare samples for this technique. This technique observes changes in dipole moment due to molecular vibrations, and identifies functional groups in the fingerprint region. For 10 points, name this spectroscopic technique named for radiation with a wavelength longer than visible light. ■END■
| 2025 PLAYTIME Online | 04/26/2025 | Y | 9 | 78% | 22% | 56% | 89.57 |
| 2024 PLAYTIME @ Harvard | 04/26/2025 | Y | 4 | 50% | 0% | 75% | 116.50 |
| 2024 PLAYTIME @ Virginia Tech | 07/11/2025 | Y | 3 | 67% | 33% | 67% | 103.50 |
| 2024 PLAYTIME @ UBC | 10/05/2024 | Y | 8 | 100% | 13% | 13% | 100.63 |
| 2024 PLAYTIME @ WashU | 10/12/2024 | Y | 6 | 100% | 0% | 50% | 107.00 |
| 2024 PLAYTIME @ JHU | 10/26/2024 | Y | 8 | 88% | 13% | 38% | 114.86 |
| 2025 PLAYTIME @ Northwest | 12/10/2024 | Y | 4 | 100% | 0% | 50% | 125.50 |
| 2025 PLAYTIME @ Claremont | 12/10/2024 | Y | 5 | 100% | 20% | 0% | 88.20 |
| 2025 PLAYTIME @ Florida | 12/10/2024 | Y | 3 | 100% | 33% | 33% | 92.67 |
| 2025 PLAYTIME @ CWRU | 12/10/2024 | Y | 5 | 100% | 20% | 20% | 107.60 |
| 2025 PLAYTIME @ Sheffield | 12/10/2024 | Y | 7 | 100% | 0% | 57% | 120.14 |
| Player | Team | Opponent | Buzz Position | Value |
|---|---|---|---|---|
| Stan | Gruh | Four Generalists in Search of a Power | 13 | 15 |
| Bryan Ugaz | Arizona State University A | UW B | 24 | -5 |
| Raymond Chen | Toronto C | Toronto B | 28 | 15 |
| Eric Mukherjee | Mike Dukakis Tank Battalion | Free Agents 1 | 34 | -5 |
| Yash Mandavia | Illinois B | WashU Squirtle | 38 | -5 |
| Maximilian Niebur | Johns Hopkins A | George Mason C | 44 | 15 |
| Calvin Bostleman | Ohio State A | Ohio State C | 45 | 15 |
| Michel Chen | P.C.‚ Daniel‚ Michel‚ and Jason B | UCLA B | 45 | 15 |
| Jacob Finley | Notre Dame + Epic Games | mongeese | 45 | -5 |
| Max Neal | Harvard | RIT | 62 | -5 |
| Bill Zhao | Keeping Up With the Cardassians | Billy's Bastion | 62 | 15 |
| Khanh Nguyen | Project2025BC: Make Assyria Great Again | Too much from you lately | 62 | -5 |
| Ameya Bhalerao | mongeese | Notre Dame + Epic Games | 62 | 0 |
| Karthik Jayaram | Quatumvirate | MSJ | 62 | -5 |
| Daniel Sheinberg | Trip-Hop Quizzer Tricky | evil women enjoyers | 62 | 15 |
| Ted Harrison | Edinburgh | Imperial A | 62 | -5 |
| Kamil Swiatek | Alberta | UW A | 63 | -5 |
| Ryan Rosenberg | Adrianne Lenker 4 Nobel Lit Prize 2K65 | Somehow Paula Deen Returned | 77 | -5 |
| Jim Fan | Master and Margaritaville | 4 quizbowl pros go Virginia on North Carolina | 77 | 15 |
| Shahar Schwartz | Egypt Airlines Haters | Monsieur Hulot's Academic Team | 77 | -5 |
| Danny Fisher | Warwick C | Warwick B | 79 | -5 |
| Effa Longe | MIT | Lexington | 84 | -5 |
| Arthur Gayden | Chicago A | Truman State | 84 | 10 |
| Benjamin Yang | Caltech | Claremont A | 84 | 10 |
| Payton Chung | girl 15 whale i mean they | UCSD | 84 | 10 |
| Victor Prieto | Monsieur Hulot's Academic Team | Egypt Airlines Haters | 84 | 10 |
| Tracy Mirkin | Edwin Laundrorat's Long-Lost Man Unclothès Rat Degrosses | Qin Shi Huang's Immortality Poison | 86 | 10 |
| Liam Kusalik | Waterloo A | Toronto A | 89 | 10 |
| Caleb Ott | Waterloo B | Simon Fraser | 89 | 10 |
| Michael Hunding | Illinois A | WashU Bulbasaur | 91 | 10 |
| Alan Lee | CWRU | Rutgers | 93 | -5 |
| Lesley Kwarteng | Johns Hopkins B | George Washington | 100 | -5 |
| Shiv Seshan | Cambridge | Birmingham | 102 | 10 |
| Robert Crawley | Warwick A | Manchester | 102 | -5 |
| Conor Thompson | Iowa State | Missouri | 103 | -5 |
| Annika Larson | Claremont B | UCLA A | 103 | 10 |
| Andrew Fisher | Sheffield B | Sheffield C | 103 | 10 |
| Samarth Ram | Chicago B | SIUE | 104 | 10 |
| Ethan Ma | Illinois C | WashU Charmander | 104 | -5 |
| Akshath Sivachidhambaram | Illinois Orange | Mahjonng Masters | 104 | -5 |
| Theenash Sengupta | MSJ | Quatumvirate | 104 | 10 |
| Eoin Neale | Lancaster | Imperial B | 104 | -5 |
| Sky Hong | we need new names | Auburn 2026 | 104 | 10 |
| Yusuf Baig | Mac A | Toronto Metropolitan | 106 | 10 |
| Megan Wang | Brown | Brandeis | 107 | 10 |
| Nabhaan Farooqi | McGill B | Toronto D | 107 | 10 |
| Asha Basu | McGill A | Waterloo C | 111 | -5 |
| Nikhil Nair | BU | Belmont | 112 | -5 |
| Ariel Faeder | Pittsburgh | Ohio State B | 112 | 10 |
| Andy Yu | Maryland A | Catholic University of America | 112 | -5 |
| Padraig Finan | Washington Connections | Carleton | 112 | 10 |
| June Yin | WashU Squirtle | Illinois B | 112 | 10 |
| Andy Huff | LSE | Sheffield | 117 | 10 |
| Matthew Bucek | George Mason A | Maryland B | 118 | 10 |
| Matt Weiner | Ashurbanipal’s Drag Race | Even in Blacksburg There I Am | 118 | -5 |
| Samay Math | WashU Charmander | Illinois C | 121 | 10 |
| Aditya Patnaik | Ohio State D | Michigan D | 121 | 10 |
| Todd Maslyk | Michigan A | Oberlin | 122 | -5 |
| Saketh Dontaraju | NYU A | NYU C | 123 | 10 |
| Anderson Wang | Art of Premature Signaling | UCSB | 125 | 10 |
| Cade Reinberger | RIT | Harvard | 126 | 10 |
| Athan Juritsch | Toronto E | Ottawa A | 126 | 10 |
| Marcus Smith | George Mason B | NYU B | 129 | 10 |
| Nathan Easow | Manchester | Warwick A | 129 | 10 |
| Gregory Zeldovich | Belmont | BU | 130 | 0 |
| Shishir Bharadwaj | Lexington | MIT | 130 | 0 |
| Vikshar Athreya | Rutgers | CWRU | 130 | 10 |
| Cole Hartung | Georgetown | Haverford B | 130 | 10 |
| Rayton Lin | Waterloo C | McGill A | 130 | 10 |
| Elijah Mandelbaum | Guelph | UBC | 130 | 10 |
| Jonathan Shauf | Even in Blacksburg There I Am | Ashurbanipal’s Drag Race | 130 | 10 |
| Braden Booth | Missouri | Iowa State | 130 | 10 |
| Graham Cope | Too much from you lately | Project2025BC: Make Assyria Great Again | 130 | 10 |
| Nick Marinni | 2 Italians, 2 Poles, All Noles | Goober Gang | 130 | 0 |
| Coy Mier | Goober Gang | 2 Italians, 2 Poles, All Noles | 130 | 0 |
| Nathan Liang | Mahjonng Masters | Illinois Orange | 130 | 10 |
| Gus Redding | Imperial A | Edinburgh | 130 | 10 |
| Eloise Wood | Imperial B | Lancaster | 130 | 10 |
| Adsayan Ganesh | Warwick B | Warwick C | 130 | 10 |
| Elijah Quan | Michigan C | Michigan B | 130 | 10 |
| Elise Wettach | Oberlin | Michigan A | 130 | 10 |
| Dillon George | Catholic University of America | Maryland A | 130 | 10 |
| George Matsumura | UW B | Arizona State University A | 130 | 10 |
| Matthew Ribar | Arizona State University B | South Dakota School of Mines | 130 | 10 |
| Euan McCubbin | UW A | Alberta | 130 | 10 |
| Olin Bose | Free Agents 1 | Mike Dukakis Tank Battalion | 130 | 10 |