| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Developed in the early 1900s, this enclosure is used to study the paths of particles as vapor condenses around them | a cloud chamber | $2,000 | DJ | NUCLEAR PHYSICS | 2017-05-30 | #7542 | |
| C.T.R. Wilson won the 1927 Nobel Prize for inventing this gas-filled compartment to detect charged particles | a cloud chamber | $800 | DJ | PARTICLE PHYSICS | 2005-03-07 | #4726 |