| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Last name of the man who took the image seenherein the 1890s | Roentgen | $1,200 | DJ | SCIENTIFIC NON-AMERICAN | 2014-07-03 | #6874 | |
| This X-ray discoverer conducted numerous other researches including on elasticity | Roentgen | $1,200 | DJ | SCIENTISTS | 2004-05-25 | #4552 | |
| He made advances in heat & electricity, but was most famous for his discovery of X-rays | Roentgen | $400 | DJ | SCIENTISTS | 1996-07-08 | #2746 |