| Clue | Source | Date |
|---|---|---|
| Walter, German physical chemist born in 1864 (6) | ||
| German scientist's cosy home around Rhein's banks | ||
| Nitrogen cycle of 26 chemist | The Telegraph Toughie | 07 Apr 2023 |
| German physicist Walther ____’s heat theorem was an early form of the third law of thermodynamics | The Times Specialist Sunday | 27 Mar 2022 |
| Formulator of the third law of thermodynamics | ||
| German Nobel chemist | ||
| Nobel Prize winner in Chemistry: 1920 | ||
| German chemist. | ||
| Nobel prize chemist. | ||
| Inventor of an incandescent lamp. |