| MAXWALL | Developer of the theory of electromagnetism (7) |
| MAXWELL | Developer of the theory of electromagnetism (7) |
| EINSTEIN | Developer of the theory of relativity (8) |
| ALBERTI | Italian architect, humanist, artist, and cryptographer whose De pictura (On Painting) was the first account of the theory of linear perspective during the Renaissance (7) |
| FARADAY | English physicist, founder of the science of electromagnetism (7) |
| OERSTED | Hans Christian ___, pioneer of electromagnetism |
| MICHAELFARADAY | English physicist, founder of the science of electromagnetism (7,7) |
| FOTOMAT | Drive-thru developer of the past |
| LESSEPS | Ferdinand de ___ (developer of the Suez Canal) |
| BABBAGE | Developer of the first mechanical digital computer |
| DARWINITE | Advocate of the theory of the origin of species (alt. sp.); Wide train (anag.) (9) |
| FERMAT | French mathematician considered the founder of the theory of numbers (6) |
| EMCEE | Part of the theory of relativity, for the radio presenter |
| AMP | SI base unit, named after one of the discoverers of electromagnetism |
| AMPERE | French physicist, a founder of the study of electromagnetism |
| STEPHENHAWKING | ALS-stricken English physicist who's the subject of "The Theory of Everything": 2 wds. |
| ALBERTEINSTEIN | Originator of the theory of relativity who won the 1921 Nobel Prize in Physics (6,8) |
| SCOPES | John T ___, central figure in a 1925 trial related to the teaching of the theory of evolution |
| EDDIE | Actor ___ Redmayne of The Theory of Everything |
| LEUCIPPUS | Greek philosopher, originator of the theory of atomism |