Clue: Quantum theory developer.

Answer: MAXPLANCK

Length: 9

---

Similar Clues:

• Quantum theory subject (e.g. ATOM with 4 letters)
• Quantum theory founder (MAXPLANCK with 9 letters)
• Quantum theory pioneer Max (PLANCK with 6 letters)
• Quantum theory pioneer (e.g. BOHR with 4 letters)
• Pioneer in quantum theory (e.g. BOHR with 4 letters)
• Physicist considered the father of quantum theory (PLANC with 5 letters)
• Developer of the theory of relativity (EINSTEIN with 8 letters)
• Quantum Computer Services, since Oct. 1991 (AOL with 3 letters)
• Certain doctrine or theory (ISM with 3 letters)
• Doesn't support a conspiracy theory? (ACTSALONE with 9 letters)